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Finding the Fourth Proportional to 99,534.98, 137,314.68 and 65,499.68

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Solution

The fourth proportional to 99,534.98, 137,314.68 and 65,499.68 is: 90,360.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,534.98 : 137,314.68 = 65,499.68 : x
  2. Step 2: Convert to fraction form
    99,534.98/137,314.68 = 65,499.68/x
  3. Step 3: Cross multiply
    99,534.98x = 137,314.68 × 65,499.68
  4. Step 4: Simplify right side
    99,534.98x = 8,994,067,599.30
  5. Step 5: Solve for x
    x = 8,994,067,599.30/99,534.98
  6. Step 6: Final answer
    x = 90,360.87

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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.