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Finding the Fourth Proportional to 147,842.40, 221,763.60 and 72,974.10

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Solution

The fourth proportional to 147,842.40, 221,763.60 and 72,974.10 is: 109,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,842.40 : 221,763.60 = 72,974.10 : x
  2. Step 2: Convert to fraction form
    147,842.40/221,763.60 = 72,974.10/x
  3. Step 3: Cross multiply
    147,842.40x = 221,763.60 × 72,974.10
  4. Step 4: Simplify right side
    147,842.40x = 16,182,999,122.76
  5. Step 5: Solve for x
    x = 16,182,999,122.76/147,842.40
  6. Step 6: Final answer
    x = 109,461.15

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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.