Home / 157,731.72-217,670.90-86,113.16

Finding the Fourth Proportional to 157,731.72, 217,670.90 and 86,113.16

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Solution

The fourth proportional to 157,731.72, 217,670.90 and 86,113.16 is: 118,836.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,731.72 : 217,670.90 = 86,113.16 : x
  2. Step 2: Convert to fraction form
    157,731.72/217,670.90 = 86,113.16/x
  3. Step 3: Cross multiply
    157,731.72x = 217,670.90 × 86,113.16
  4. Step 4: Simplify right side
    157,731.72x = 18,744,329,039.04
  5. Step 5: Solve for x
    x = 18,744,329,039.04/157,731.72
  6. Step 6: Final answer
    x = 118,836.78

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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.