Home / 129,012.16-178,036.07-72,423.52

Finding the Fourth Proportional to 129,012.16, 178,036.07 and 72,423.52

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Solution

The fourth proportional to 129,012.16, 178,036.07 and 72,423.52 is: 99,944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,012.16 : 178,036.07 = 72,423.52 : x
  2. Step 2: Convert to fraction form
    129,012.16/178,036.07 = 72,423.52/x
  3. Step 3: Cross multiply
    129,012.16x = 178,036.07 × 72,423.52
  4. Step 4: Simplify right side
    129,012.16x = 12,893,998,876.37
  5. Step 5: Solve for x
    x = 12,893,998,876.37/129,012.16
  6. Step 6: Final answer
    x = 99,944.06

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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.