Home / 147,518.31-221,346.88-72,701.65

Finding the Fourth Proportional to 147,518.31, 221,346.88 and 72,701.65

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Solution

The fourth proportional to 147,518.31, 221,346.88 and 72,701.65 is: 109,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,518.31 : 221,346.88 = 72,701.65 : x
  2. Step 2: Convert to fraction form
    147,518.31/221,346.88 = 72,701.65/x
  3. Step 3: Cross multiply
    147,518.31x = 221,346.88 × 72,701.65
  4. Step 4: Simplify right side
    147,518.31x = 16,092,283,493.28
  5. Step 5: Solve for x
    x = 16,092,283,493.28/147,518.31
  6. Step 6: Final answer
    x = 109,086.68

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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.