Home / 134,543-185,687.16-86,934.80

Finding the Fourth Proportional to 134,543, 185,687.16 and 86,934.80

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Solution

The fourth proportional to 134,543, 185,687.16 and 86,934.80 is: 119,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,543 : 185,687.16 = 86,934.80 : x
  2. Step 2: Convert to fraction form
    134,543/185,687.16 = 86,934.80/x
  3. Step 3: Cross multiply
    134,543x = 185,687.16 × 86,934.80
  4. Step 4: Simplify right side
    134,543x = 16,142,676,117.17
  5. Step 5: Solve for x
    x = 16,142,676,117.17/134,543
  6. Step 6: Final answer
    x = 119,981.54

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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.