Home / 157,151.07-216,868.49-85,531.61

Finding the Fourth Proportional to 157,151.07, 216,868.49 and 85,531.61

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Solution

The fourth proportional to 157,151.07, 216,868.49 and 85,531.61 is: 118,033.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,151.07 : 216,868.49 = 85,531.61 : x
  2. Step 2: Convert to fraction form
    157,151.07/216,868.49 = 85,531.61/x
  3. Step 3: Cross multiply
    157,151.07x = 216,868.49 × 85,531.61
  4. Step 4: Simplify right side
    157,151.07x = 18,549,110,628.31
  5. Step 5: Solve for x
    x = 18,549,110,628.31/157,151.07
  6. Step 6: Final answer
    x = 118,033.62

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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.