Home / 145,144.93-200,288.95-81,470.43

Finding the Fourth Proportional to 145,144.93, 200,288.95 and 81,470.43

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Solution

The fourth proportional to 145,144.93, 200,288.95 and 81,470.43 is: 112,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,144.93 : 200,288.95 = 81,470.43 : x
  2. Step 2: Convert to fraction form
    145,144.93/200,288.95 = 81,470.43/x
  3. Step 3: Cross multiply
    145,144.93x = 200,288.95 × 81,470.43
  4. Step 4: Simplify right side
    145,144.93x = 16,317,625,471.95
  5. Step 5: Solve for x
    x = 16,317,625,471.95/145,144.93
  6. Step 6: Final answer
    x = 112,422.98

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1.5x scale

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.