Home / 103,244.08-142,326.01-72,976

Finding the Fourth Proportional to 103,244.08, 142,326.01 and 72,976

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Solution

The fourth proportional to 103,244.08, 142,326.01 and 72,976 is: 100,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,244.08 : 142,326.01 = 72,976 : x
  2. Step 2: Convert to fraction form
    103,244.08/142,326.01 = 72,976/x
  3. Step 3: Cross multiply
    103,244.08x = 142,326.01 × 72,976
  4. Step 4: Simplify right side
    103,244.08x = 10,386,382,905.76
  5. Step 5: Solve for x
    x = 10,386,382,905.76/103,244.08
  6. Step 6: Final answer
    x = 100,600.28

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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.