Home / 99,928.12-137,899.14-54,605.12

Finding the Fourth Proportional to 99,928.12, 137,899.14 and 54,605.12

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Solution

The fourth proportional to 99,928.12, 137,899.14 and 54,605.12 is: 75,354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,928.12 : 137,899.14 = 54,605.12 : x
  2. Step 2: Convert to fraction form
    99,928.12/137,899.14 = 54,605.12/x
  3. Step 3: Cross multiply
    99,928.12x = 137,899.14 × 54,605.12
  4. Step 4: Simplify right side
    99,928.12x = 7,529,999,087.60
  5. Step 5: Solve for x
    x = 7,529,999,087.60/99,928.12
  6. Step 6: Final answer
    x = 75,354.16

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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.