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Finding the Fourth Proportional to 145,999.80, 218,999.70 and 116,475.30

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Solution

The fourth proportional to 145,999.80, 218,999.70 and 116,475.30 is: 174,712.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,999.80 : 218,999.70 = 116,475.30 : x
  2. Step 2: Convert to fraction form
    145,999.80/218,999.70 = 116,475.30/x
  3. Step 3: Cross multiply
    145,999.80x = 218,999.70 × 116,475.30
  4. Step 4: Simplify right side
    145,999.80x = 25,508,055,757.41
  5. Step 5: Solve for x
    x = 25,508,055,757.41/145,999.80
  6. Step 6: Final answer
    x = 174,712.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.