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Finding the Fourth Proportional to 99,646.60, 137,524.72 and 57,204.22

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Solution

The fourth proportional to 99,646.60, 137,524.72 and 57,204.22 is: 78,948.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,646.60 : 137,524.72 = 57,204.22 : x
  2. Step 2: Convert to fraction form
    99,646.60/137,524.72 = 57,204.22/x
  3. Step 3: Cross multiply
    99,646.60x = 137,524.72 × 57,204.22
  4. Step 4: Simplify right side
    99,646.60x = 7,866,994,338.32
  5. Step 5: Solve for x
    x = 7,866,994,338.32/99,646.60
  6. Step 6: Final answer
    x = 78,948.95

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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.