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Finding the Fourth Proportional to 98,720.52, 136,144.14 and 84,433.92

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Solution

The fourth proportional to 98,720.52, 136,144.14 and 84,433.92 is: 116,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.52 : 136,144.14 = 84,433.92 : x
  2. Step 2: Convert to fraction form
    98,720.52/136,144.14 = 84,433.92/x
  3. Step 3: Cross multiply
    98,720.52x = 136,144.14 × 84,433.92
  4. Step 4: Simplify right side
    98,720.52x = 11,495,183,425.23
  5. Step 5: Solve for x
    x = 11,495,183,425.23/98,720.52
  6. Step 6: Final answer
    x = 116,441.68

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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.