Home / 145,155,287.10-217,751,593.05-72,409,251.90

Finding the Fourth Proportional to 145,155,287.10, 217,751,593.05 and 72,409,251.90

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Solution

The fourth proportional to 145,155,287.10, 217,751,593.05 and 72,409,251.90 is: 108,623,187.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155,287.10 : 217,751,593.05 = 72,409,251.90 : x
  2. Step 2: Convert to fraction form
    145,155,287.10/217,751,593.05 = 72,409,251.90/x
  3. Step 3: Cross multiply
    145,155,287.10x = 217,751,593.05 × 72,409,251.90
  4. Step 4: Simplify right side
    145,155,287.10x = 15,767,229,952,783,742
  5. Step 5: Solve for x
    x = 15,767,229,952,783,742/145,155,287.10
  6. Step 6: Final answer
    x = 108,623,187.40

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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.