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Finding the Fourth Proportional to 122,152.65, 168,580.89 and 67,718.13

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Solution

The fourth proportional to 122,152.65, 168,580.89 and 67,718.13 is: 93,456.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,152.65 : 168,580.89 = 67,718.13 : x
  2. Step 2: Convert to fraction form
    122,152.65/168,580.89 = 67,718.13/x
  3. Step 3: Cross multiply
    122,152.65x = 168,580.89 × 67,718.13
  4. Step 4: Simplify right side
    122,152.65x = 11,415,982,285.95
  5. Step 5: Solve for x
    x = 11,415,982,285.95/122,152.65
  6. Step 6: Final answer
    x = 93,456.69

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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.