Home / 148,010.20-221,432.10-128,505.40

Finding the Fourth Proportional to 148,010.20, 221,432.10 and 128,505.40

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Solution

The fourth proportional to 148,010.20, 221,432.10 and 128,505.40 is: 192,251.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,010.20 : 221,432.10 = 128,505.40 : x
  2. Step 2: Convert to fraction form
    148,010.20/221,432.10 = 128,505.40/x
  3. Step 3: Cross multiply
    148,010.20x = 221,432.10 × 128,505.40
  4. Step 4: Simplify right side
    148,010.20x = 28,455,220,583.34
  5. Step 5: Solve for x
    x = 28,455,220,583.34/148,010.20
  6. Step 6: Final answer
    x = 192,251.75

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1.5x scale

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.