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Finding the Fourth Proportional to 98,159.12, 135,461.16 and 53,447.12

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Solution

The fourth proportional to 98,159.12, 135,461.16 and 53,447.12 is: 73,757.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,159.12 : 135,461.16 = 53,447.12 : x
  2. Step 2: Convert to fraction form
    98,159.12/135,461.16 = 53,447.12/x
  3. Step 3: Cross multiply
    98,159.12x = 135,461.16 × 53,447.12
  4. Step 4: Simplify right side
    98,159.12x = 7,240,008,873.86
  5. Step 5: Solve for x
    x = 7,240,008,873.86/98,159.12
  6. Step 6: Final answer
    x = 73,757.88

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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.