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Finding the Fourth Proportional to 99,429.80, 137,055.66 and 73,543.10

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Solution

The fourth proportional to 99,429.80, 137,055.66 and 73,543.10 is: 101,373.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,429.80 : 137,055.66 = 73,543.10 : x
  2. Step 2: Convert to fraction form
    99,429.80/137,055.66 = 73,543.10/x
  3. Step 3: Cross multiply
    99,429.80x = 137,055.66 × 73,543.10
  4. Step 4: Simplify right side
    99,429.80x = 10,079,498,108.95
  5. Step 5: Solve for x
    x = 10,079,498,108.95/99,429.80
  6. Step 6: Final answer
    x = 101,373.01

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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.