Home / 157,456.17-217,281.47-85,829.13

Finding the Fourth Proportional to 157,456.17, 217,281.47 and 85,829.13

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Solution

The fourth proportional to 157,456.17, 217,281.47 and 85,829.13 is: 118,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,456.17 : 217,281.47 = 85,829.13 : x
  2. Step 2: Convert to fraction form
    157,456.17/217,281.47 = 85,829.13/x
  3. Step 3: Cross multiply
    157,456.17x = 217,281.47 × 85,829.13
  4. Step 4: Simplify right side
    157,456.17x = 18,649,079,106.08
  5. Step 5: Solve for x
    x = 18,649,079,106.08/157,456.17
  6. Step 6: Final answer
    x = 118,439.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.