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Finding the Fourth Proportional to 139,525.16, 209,283.10 and 60,639.48

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Solution

The fourth proportional to 139,525.16, 209,283.10 and 60,639.48 is: 90,957.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,525.16 : 209,283.10 = 60,639.48 : x
  2. Step 2: Convert to fraction form
    139,525.16/209,283.10 = 60,639.48/x
  3. Step 3: Cross multiply
    139,525.16x = 209,283.10 × 60,639.48
  4. Step 4: Simplify right side
    139,525.16x = 12,690,818,356.79
  5. Step 5: Solve for x
    x = 12,690,818,356.79/139,525.16
  6. Step 6: Final answer
    x = 90,957.20

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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.