Home / 179,445.61-247,640.55-102,978.70

Finding the Fourth Proportional to 179,445.61, 247,640.55 and 102,978.70

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Solution

The fourth proportional to 179,445.61, 247,640.55 and 102,978.70 is: 142,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,445.61 : 247,640.55 = 102,978.70 : x
  2. Step 2: Convert to fraction form
    179,445.61/247,640.55 = 102,978.70/x
  3. Step 3: Cross multiply
    179,445.61x = 247,640.55 × 102,978.70
  4. Step 4: Simplify right side
    179,445.61x = 25,501,701,906.29
  5. Step 5: Solve for x
    x = 25,501,701,906.29/179,445.61
  6. Step 6: Final answer
    x = 142,113.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.