Home / 157,151.19-216,868.63-85,531.72

Finding the Fourth Proportional to 157,151.19, 216,868.63 and 85,531.72

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Solution

The fourth proportional to 157,151.19, 216,868.63 and 85,531.72 is: 118,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,151.19 : 216,868.63 = 85,531.72 : x
  2. Step 2: Convert to fraction form
    157,151.19/216,868.63 = 85,531.72/x
  3. Step 3: Cross multiply
    157,151.19x = 216,868.63 × 85,531.72
  4. Step 4: Simplify right side
    157,151.19x = 18,549,146,937.94
  5. Step 5: Solve for x
    x = 18,549,146,937.94/157,151.19
  6. Step 6: Final answer
    x = 118,033.77

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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.