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Finding the Fourth Proportional to 99,430.64, 137,214.30 and 54,718.64

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Solution

The fourth proportional to 99,430.64, 137,214.30 and 54,718.64 is: 75,511.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,430.64 : 137,214.30 = 54,718.64 : x
  2. Step 2: Convert to fraction form
    99,430.64/137,214.30 = 54,718.64/x
  3. Step 3: Cross multiply
    99,430.64x = 137,214.30 × 54,718.64
  4. Step 4: Simplify right side
    99,430.64x = 7,508,179,884.55
  5. Step 5: Solve for x
    x = 7,508,179,884.55/99,430.64
  6. Step 6: Final answer
    x = 75,511.73

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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.