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Finding the Fourth Proportional to 117,085.92, 175,284.36 and 72,569.76

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Solution

The fourth proportional to 117,085.92, 175,284.36 and 72,569.76 is: 108,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,085.92 : 175,284.36 = 72,569.76 : x
  2. Step 2: Convert to fraction form
    117,085.92/175,284.36 = 72,569.76/x
  3. Step 3: Cross multiply
    117,085.92x = 175,284.36 × 72,569.76
  4. Step 4: Simplify right side
    117,085.92x = 12,720,343,936.95
  5. Step 5: Solve for x
    x = 12,720,343,936.95/117,085.92
  6. Step 6: Final answer
    x = 108,641.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.