Home / 157,350.30-217,145.90-85,730.29

Finding the Fourth Proportional to 157,350.30, 217,145.90 and 85,730.29

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Solution

The fourth proportional to 157,350.30, 217,145.90 and 85,730.29 is: 118,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,350.30 : 217,145.90 = 85,730.29 : x
  2. Step 2: Convert to fraction form
    157,350.30/217,145.90 = 85,730.29/x
  3. Step 3: Cross multiply
    157,350.30x = 217,145.90 × 85,730.29
  4. Step 4: Simplify right side
    157,350.30x = 18,615,980,979.31
  5. Step 5: Solve for x
    x = 18,615,980,979.31/157,350.30
  6. Step 6: Final answer
    x = 118,309.15

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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.