Home / 153,414.95-211,778.15-103,143.11

Finding the Fourth Proportional to 153,414.95, 211,778.15 and 103,143.11

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Solution

The fourth proportional to 153,414.95, 211,778.15 and 103,143.11 is: 142,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,414.95 : 211,778.15 = 103,143.11 : x
  2. Step 2: Convert to fraction form
    153,414.95/211,778.15 = 103,143.11/x
  3. Step 3: Cross multiply
    153,414.95x = 211,778.15 × 103,143.11
  4. Step 4: Simplify right side
    153,414.95x = 21,843,455,446.44
  5. Step 5: Solve for x
    x = 21,843,455,446.44/153,414.95
  6. Step 6: Final answer
    x = 142,381.54

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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.