Home / 145,514,977.80-218,272,466.70-72,742,990.20

Finding the Fourth Proportional to 145,514,977.80, 218,272,466.70 and 72,742,990.20

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Solution

The fourth proportional to 145,514,977.80, 218,272,466.70 and 72,742,990.20 is: 109,114,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,514,977.80 : 218,272,466.70 = 72,742,990.20 : x
  2. Step 2: Convert to fraction form
    145,514,977.80/218,272,466.70 = 72,742,990.20/x
  3. Step 3: Cross multiply
    145,514,977.80x = 218,272,466.70 × 72,742,990.20
  4. Step 4: Simplify right side
    145,514,977.80x = 15,877,791,906,087,926
  5. Step 5: Solve for x
    x = 15,877,791,906,087,926/145,514,977.80
  6. Step 6: Final answer
    x = 109,114,485.30

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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.