Home / 145,619.17-218,438.12-45,783.23

Finding the Fourth Proportional to 145,619.17, 218,438.12 and 45,783.23

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Solution

The fourth proportional to 145,619.17, 218,438.12 and 45,783.23 is: 68,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,619.17 : 218,438.12 = 45,783.23 : x
  2. Step 2: Convert to fraction form
    145,619.17/218,438.12 = 45,783.23/x
  3. Step 3: Cross multiply
    145,619.17x = 218,438.12 × 45,783.23
  4. Step 4: Simplify right side
    145,619.17x = 10,000,801,711.00
  5. Step 5: Solve for x
    x = 10,000,801,711.00/145,619.17
  6. Step 6: Final answer
    x = 68,677.78

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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.