Home / 99,643,691.20-149,465,536.80-45,895,979.20

Finding the Fourth Proportional to 99,643,691.20, 149,465,536.80 and 45,895,979.20

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Solution

The fourth proportional to 99,643,691.20, 149,465,536.80 and 45,895,979.20 is: 68,843,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643,691.20 : 149,465,536.80 = 45,895,979.20 : x
  2. Step 2: Convert to fraction form
    99,643,691.20/149,465,536.80 = 45,895,979.20/x
  3. Step 3: Cross multiply
    99,643,691.20x = 149,465,536.80 × 45,895,979.20
  4. Step 4: Simplify right side
    99,643,691.20x = 6,859,867,168,089,636
  5. Step 5: Solve for x
    x = 6,859,867,168,089,636/99,643,691.20
  6. Step 6: Final answer
    x = 68,843,968.80

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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.