Home / 122,478.48-169,008.12-74,743.56

Finding the Fourth Proportional to 122,478.48, 169,008.12 and 74,743.56

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Solution

The fourth proportional to 122,478.48, 169,008.12 and 74,743.56 is: 103,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,478.48 : 169,008.12 = 74,743.56 : x
  2. Step 2: Convert to fraction form
    122,478.48/169,008.12 = 74,743.56/x
  3. Step 3: Cross multiply
    122,478.48x = 169,008.12 × 74,743.56
  4. Step 4: Simplify right side
    122,478.48x = 12,632,268,557.71
  5. Step 5: Solve for x
    x = 12,632,268,557.71/122,478.48
  6. Step 6: Final answer
    x = 103,138.68

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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.