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Finding the Fourth Proportional to 122,988.52, 183,432.65 and 104,390.92

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Solution

The fourth proportional to 122,988.52, 183,432.65 and 104,390.92 is: 155,695.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,988.52 : 183,432.65 = 104,390.92 : x
  2. Step 2: Convert to fraction form
    122,988.52/183,432.65 = 104,390.92/x
  3. Step 3: Cross multiply
    122,988.52x = 183,432.65 × 104,390.92
  4. Step 4: Simplify right side
    122,988.52x = 19,148,703,091.54
  5. Step 5: Solve for x
    x = 19,148,703,091.54/122,988.52
  6. Step 6: Final answer
    x = 155,695.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.