Home / 145,426.20-218,066.40-66,451.20

Finding the Fourth Proportional to 145,426.20, 218,066.40 and 66,451.20

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Solution

The fourth proportional to 145,426.20, 218,066.40 and 66,451.20 is: 99,643.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,426.20 : 218,066.40 = 66,451.20 : x
  2. Step 2: Convert to fraction form
    145,426.20/218,066.40 = 66,451.20/x
  3. Step 3: Cross multiply
    145,426.20x = 218,066.40 × 66,451.20
  4. Step 4: Simplify right side
    145,426.20x = 14,490,773,959.68
  5. Step 5: Solve for x
    x = 14,490,773,959.68/145,426.20
  6. Step 6: Final answer
    x = 99,643.49

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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.