Home / 157,139.70-216,305.10-136,961.52

Finding the Fourth Proportional to 157,139.70, 216,305.10 and 136,961.52

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Solution

The fourth proportional to 157,139.70, 216,305.10 and 136,961.52 is: 188,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,139.70 : 216,305.10 = 136,961.52 : x
  2. Step 2: Convert to fraction form
    157,139.70/216,305.10 = 136,961.52/x
  3. Step 3: Cross multiply
    157,139.70x = 216,305.10 × 136,961.52
  4. Step 4: Simplify right side
    157,139.70x = 29,625,475,279.75
  5. Step 5: Solve for x
    x = 29,625,475,279.75/157,139.70
  6. Step 6: Final answer
    x = 188,529.54

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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.