Home / 100,552.12-138,646.92-64,204.18

Finding the Fourth Proportional to 100,552.12, 138,646.92 and 64,204.18

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Solution

The fourth proportional to 100,552.12, 138,646.92 and 64,204.18 is: 88,528.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,552.12 : 138,646.92 = 64,204.18 : x
  2. Step 2: Convert to fraction form
    100,552.12/138,646.92 = 64,204.18/x
  3. Step 3: Cross multiply
    100,552.12x = 138,646.92 × 64,204.18
  4. Step 4: Simplify right side
    100,552.12x = 8,901,711,702.27
  5. Step 5: Solve for x
    x = 8,901,711,702.27/100,552.12
  6. Step 6: Final answer
    x = 88,528.34

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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.