Home / 122,535.60-169,125.48-74,778.72

Finding the Fourth Proportional to 122,535.60, 169,125.48 and 74,778.72

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Solution

The fourth proportional to 122,535.60, 169,125.48 and 74,778.72 is: 103,210.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,535.60 : 169,125.48 = 74,778.72 : x
  2. Step 2: Convert to fraction form
    122,535.60/169,125.48 = 74,778.72/x
  3. Step 3: Cross multiply
    122,535.60x = 169,125.48 × 74,778.72
  4. Step 4: Simplify right side
    122,535.60x = 12,646,986,913.79
  5. Step 5: Solve for x
    x = 12,646,986,913.79/122,535.60
  6. Step 6: Final answer
    x = 103,210.72

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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.