Home / 145,171,409.40-217,757,114.10-72,611,998.20

Finding the Fourth Proportional to 145,171,409.40, 217,757,114.10 and 72,611,998.20

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Solution

The fourth proportional to 145,171,409.40, 217,757,114.10 and 72,611,998.20 is: 108,917,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,171,409.40 : 217,757,114.10 = 72,611,998.20 : x
  2. Step 2: Convert to fraction form
    145,171,409.40/217,757,114.10 = 72,611,998.20/x
  3. Step 3: Cross multiply
    145,171,409.40x = 217,757,114.10 × 72,611,998.20
  4. Step 4: Simplify right side
    145,171,409.40x = 15,811,779,177,066,394
  5. Step 5: Solve for x
    x = 15,811,779,177,066,394/145,171,409.40
  6. Step 6: Final answer
    x = 108,917,997.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.