Home / 145,115.10-217,552.68-55,139.19

Finding the Fourth Proportional to 145,115.10, 217,552.68 and 55,139.19

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Solution

The fourth proportional to 145,115.10, 217,552.68 and 55,139.19 is: 82,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,115.10 : 217,552.68 = 55,139.19 : x
  2. Step 2: Convert to fraction form
    145,115.10/217,552.68 = 55,139.19/x
  3. Step 3: Cross multiply
    145,115.10x = 217,552.68 × 55,139.19
  4. Step 4: Simplify right side
    145,115.10x = 11,995,678,557.53
  5. Step 5: Solve for x
    x = 11,995,678,557.53/145,115.10
  6. Step 6: Final answer
    x = 82,663.20

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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.