Home / 139,432.08-209,030.58-60,486.78

Finding the Fourth Proportional to 139,432.08, 209,030.58 and 60,486.78

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Solution

The fourth proportional to 139,432.08, 209,030.58 and 60,486.78 is: 90,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,432.08 : 209,030.58 = 60,486.78 : x
  2. Step 2: Convert to fraction form
    139,432.08/209,030.58 = 60,486.78/x
  3. Step 3: Cross multiply
    139,432.08x = 209,030.58 × 60,486.78
  4. Step 4: Simplify right side
    139,432.08x = 12,643,586,705.73
  5. Step 5: Solve for x
    x = 12,643,586,705.73/139,432.08
  6. Step 6: Final answer
    x = 90,679.18

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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.