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Finding the Fourth Proportional to 157,237.71, 216,963.62 and 90,156.75

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Solution

The fourth proportional to 157,237.71, 216,963.62 and 90,156.75 is: 124,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,237.71 : 216,963.62 = 90,156.75 : x
  2. Step 2: Convert to fraction form
    157,237.71/216,963.62 = 90,156.75/x
  3. Step 3: Cross multiply
    157,237.71x = 216,963.62 × 90,156.75
  4. Step 4: Simplify right side
    157,237.71x = 19,560,734,396.65
  5. Step 5: Solve for x
    x = 19,560,734,396.65/157,237.71
  6. Step 6: Final answer
    x = 124,402.31

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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.