Home / 99,643.01-137,545.74-72,997.16

Finding the Fourth Proportional to 99,643.01, 137,545.74 and 72,997.16

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Solution

The fourth proportional to 99,643.01, 137,545.74 and 72,997.16 is: 100,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643.01 : 137,545.74 = 72,997.16 : x
  2. Step 2: Convert to fraction form
    99,643.01/137,545.74 = 72,997.16/x
  3. Step 3: Cross multiply
    99,643.01x = 137,545.74 × 72,997.16
  4. Step 4: Simplify right side
    99,643.01x = 10,040,447,702.37
  5. Step 5: Solve for x
    x = 10,040,447,702.37/99,643.01
  6. Step 6: Final answer
    x = 100,764.20

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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.