Home / 103,010.76-154,308.38-86,323.95

Finding the Fourth Proportional to 103,010.76, 154,308.38 and 86,323.95

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Solution

The fourth proportional to 103,010.76, 154,308.38 and 86,323.95 is: 129,311.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,010.76 : 154,308.38 = 86,323.95 : x
  2. Step 2: Convert to fraction form
    103,010.76/154,308.38 = 86,323.95/x
  3. Step 3: Cross multiply
    103,010.76x = 154,308.38 × 86,323.95
  4. Step 4: Simplify right side
    103,010.76x = 13,320,508,448.08
  5. Step 5: Solve for x
    x = 13,320,508,448.08/103,010.76
  6. Step 6: Final answer
    x = 129,311.82

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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.