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Finding the Fourth Proportional to 145,999.67, 201,475.15 and 81,470.61

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Solution

The fourth proportional to 145,999.67, 201,475.15 and 81,470.61 is: 112,426.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,999.67 : 201,475.15 = 81,470.61 : x
  2. Step 2: Convert to fraction form
    145,999.67/201,475.15 = 81,470.61/x
  3. Step 3: Cross multiply
    145,999.67x = 201,475.15 × 81,470.61
  4. Step 4: Simplify right side
    145,999.67x = 16,414,303,166.67
  5. Step 5: Solve for x
    x = 16,414,303,166.67/145,999.67
  6. Step 6: Final answer
    x = 112,426.99

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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.