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Finding the Fourth Proportional to 157,617.66, 217,510.47 and 90,549.66

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Solution

The fourth proportional to 157,617.66, 217,510.47 and 90,549.66 is: 124,957.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.66 : 217,510.47 = 90,549.66 : x
  2. Step 2: Convert to fraction form
    157,617.66/217,510.47 = 90,549.66/x
  3. Step 3: Cross multiply
    157,617.66x = 217,510.47 × 90,549.66
  4. Step 4: Simplify right side
    157,617.66x = 19,695,499,104.94
  5. Step 5: Solve for x
    x = 19,695,499,104.94/157,617.66
  6. Step 6: Final answer
    x = 124,957.44

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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.