Home / 127,299.80-175,572.36-81,981.52

Finding the Fourth Proportional to 127,299.80, 175,572.36 and 81,981.52

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Solution

The fourth proportional to 127,299.80, 175,572.36 and 81,981.52 is: 113,069.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,299.80 : 175,572.36 = 81,981.52 : x
  2. Step 2: Convert to fraction form
    127,299.80/175,572.36 = 81,981.52/x
  3. Step 3: Cross multiply
    127,299.80x = 175,572.36 × 81,981.52
  4. Step 4: Simplify right side
    127,299.80x = 14,393,688,503.86
  5. Step 5: Solve for x
    x = 14,393,688,503.86/127,299.80
  6. Step 6: Final answer
    x = 113,069.21

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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.