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Finding the Fourth Proportional to 112,737.78, 168,876.95 and 53,393.54

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Solution

The fourth proportional to 112,737.78, 168,876.95 and 53,393.54 is: 79,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,737.78 : 168,876.95 = 53,393.54 : x
  2. Step 2: Convert to fraction form
    112,737.78/168,876.95 = 53,393.54/x
  3. Step 3: Cross multiply
    112,737.78x = 168,876.95 × 53,393.54
  4. Step 4: Simplify right side
    112,737.78x = 9,016,937,073.55
  5. Step 5: Solve for x
    x = 9,016,937,073.55/112,737.78
  6. Step 6: Final answer
    x = 79,981.50

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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.