Home / 129,514.23-178,735.16-72,153.52

Finding the Fourth Proportional to 129,514.23, 178,735.16 and 72,153.52

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Solution

The fourth proportional to 129,514.23, 178,735.16 and 72,153.52 is: 99,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,514.23 : 178,735.16 = 72,153.52 : x
  2. Step 2: Convert to fraction form
    129,514.23/178,735.16 = 72,153.52/x
  3. Step 3: Cross multiply
    129,514.23x = 178,735.16 × 72,153.52
  4. Step 4: Simplify right side
    129,514.23x = 12,896,371,023.48
  5. Step 5: Solve for x
    x = 12,896,371,023.48/129,514.23
  6. Step 6: Final answer
    x = 99,574.93

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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.