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Finding the Fourth Proportional to 98,711.52, 136,225.12 and 53,999.52

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Solution

The fourth proportional to 98,711.52, 136,225.12 and 53,999.52 is: 74,521.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,711.52 : 136,225.12 = 53,999.52 : x
  2. Step 2: Convert to fraction form
    98,711.52/136,225.12 = 53,999.52/x
  3. Step 3: Cross multiply
    98,711.52x = 136,225.12 × 53,999.52
  4. Step 4: Simplify right side
    98,711.52x = 7,356,091,091.94
  5. Step 5: Solve for x
    x = 7,356,091,091.94/98,711.52
  6. Step 6: Final answer
    x = 74,521.10

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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.