Home / 129,443.51-178,590.33-72,843.95

Finding the Fourth Proportional to 129,443.51, 178,590.33 and 72,843.95

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Solution

The fourth proportional to 129,443.51, 178,590.33 and 72,843.95 is: 100,501.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,443.51 : 178,590.33 = 72,843.95 : x
  2. Step 2: Convert to fraction form
    129,443.51/178,590.33 = 72,843.95/x
  3. Step 3: Cross multiply
    129,443.51x = 178,590.33 × 72,843.95
  4. Step 4: Simplify right side
    129,443.51x = 13,009,225,069.00
  5. Step 5: Solve for x
    x = 13,009,225,069.00/129,443.51
  6. Step 6: Final answer
    x = 100,501.18

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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.