Home / 99,108.16-148,656.48-72,481.12

Finding the Fourth Proportional to 99,108.16, 148,656.48 and 72,481.12

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Solution

The fourth proportional to 99,108.16, 148,656.48 and 72,481.12 is: 108,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,108.16 : 148,656.48 = 72,481.12 : x
  2. Step 2: Convert to fraction form
    99,108.16/148,656.48 = 72,481.12/x
  3. Step 3: Cross multiply
    99,108.16x = 148,656.48 × 72,481.12
  4. Step 4: Simplify right side
    99,108.16x = 10,774,788,165.66
  5. Step 5: Solve for x
    x = 10,774,788,165.66/99,108.16
  6. Step 6: Final answer
    x = 108,717.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.