Home / 157,139.34-216,857.12-89,159.15

Finding the Fourth Proportional to 157,139.34, 216,857.12 and 89,159.15

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Solution

The fourth proportional to 157,139.34, 216,857.12 and 89,159.15 is: 123,042.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,139.34 : 216,857.12 = 89,159.15 : x
  2. Step 2: Convert to fraction form
    157,139.34/216,857.12 = 89,159.15/x
  3. Step 3: Cross multiply
    157,139.34x = 216,857.12 × 89,159.15
  4. Step 4: Simplify right side
    157,139.34x = 19,334,794,960.57
  5. Step 5: Solve for x
    x = 19,334,794,960.57/157,139.34
  6. Step 6: Final answer
    x = 123,042.36

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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.