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Finding the Fourth Proportional to 122,578.68, 169,011.40 and 88,532.76

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Solution

The fourth proportional to 122,578.68, 169,011.40 and 88,532.76 is: 122,068.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,578.68 : 169,011.40 = 88,532.76 : x
  2. Step 2: Convert to fraction form
    122,578.68/169,011.40 = 88,532.76/x
  3. Step 3: Cross multiply
    122,578.68x = 169,011.40 × 88,532.76
  4. Step 4: Simplify right side
    122,578.68x = 14,963,045,713.46
  5. Step 5: Solve for x
    x = 14,963,045,713.46/122,578.68
  6. Step 6: Final answer
    x = 122,068.91

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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.