Home / 148,233.60-222,350.40-81,639.45

Finding the Fourth Proportional to 148,233.60, 222,350.40 and 81,639.45

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Solution

The fourth proportional to 148,233.60, 222,350.40 and 81,639.45 is: 122,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,233.60 : 222,350.40 = 81,639.45 : x
  2. Step 2: Convert to fraction form
    148,233.60/222,350.40 = 81,639.45/x
  3. Step 3: Cross multiply
    148,233.60x = 222,350.40 × 81,639.45
  4. Step 4: Simplify right side
    148,233.60x = 18,152,564,363.28
  5. Step 5: Solve for x
    x = 18,152,564,363.28/148,233.60
  6. Step 6: Final answer
    x = 122,459.18

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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.