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Finding the Fourth Proportional to 99,999.67, 138,001.72 and 59,705.93

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Solution

The fourth proportional to 99,999.67, 138,001.72 and 59,705.93 is: 82,395.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,999.67 : 138,001.72 = 59,705.93 : x
  2. Step 2: Convert to fraction form
    99,999.67/138,001.72 = 59,705.93/x
  3. Step 3: Cross multiply
    99,999.67x = 138,001.72 × 59,705.93
  4. Step 4: Simplify right side
    99,999.67x = 8,239,521,034.20
  5. Step 5: Solve for x
    x = 8,239,521,034.20/99,999.67
  6. Step 6: Final answer
    x = 82,395.48

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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.