Home / 145,080.14-200,211.77-81,432.95

Finding the Fourth Proportional to 145,080.14, 200,211.77 and 81,432.95

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Solution

The fourth proportional to 145,080.14, 200,211.77 and 81,432.95 is: 112,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,080.14 : 200,211.77 = 81,432.95 : x
  2. Step 2: Convert to fraction form
    145,080.14/200,211.77 = 81,432.95/x
  3. Step 3: Cross multiply
    145,080.14x = 200,211.77 × 81,432.95
  4. Step 4: Simplify right side
    145,080.14x = 16,303,834,648.66
  5. Step 5: Solve for x
    x = 16,303,834,648.66/145,080.14
  6. Step 6: Final answer
    x = 112,378.13

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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.