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Finding the Fourth Proportional to 112,474.60, 155,210.22 and 64,729.60

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Solution

The fourth proportional to 112,474.60, 155,210.22 and 64,729.60 is: 89,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,474.60 : 155,210.22 = 64,729.60 : x
  2. Step 2: Convert to fraction form
    112,474.60/155,210.22 = 64,729.60/x
  3. Step 3: Cross multiply
    112,474.60x = 155,210.22 × 64,729.60
  4. Step 4: Simplify right side
    112,474.60x = 10,046,695,456.51
  5. Step 5: Solve for x
    x = 10,046,695,456.51/112,474.60
  6. Step 6: Final answer
    x = 89,324.13

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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.