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Finding the Fourth Proportional to 122,459.63, 169,073.98 and 74,740.64

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Solution

The fourth proportional to 122,459.63, 169,073.98 and 74,740.64 is: 103,190.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,459.63 : 169,073.98 = 74,740.64 : x
  2. Step 2: Convert to fraction form
    122,459.63/169,073.98 = 74,740.64/x
  3. Step 3: Cross multiply
    122,459.63x = 169,073.98 × 74,740.64
  4. Step 4: Simplify right side
    122,459.63x = 12,636,696,440.33
  5. Step 5: Solve for x
    x = 12,636,696,440.33/122,459.63
  6. Step 6: Final answer
    x = 103,190.72

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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.