Home / 138,164,834.80-207,247,252.20-42,414,281.20

Finding the Fourth Proportional to 138,164,834.80, 207,247,252.20 and 42,414,281.20

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Solution

The fourth proportional to 138,164,834.80, 207,247,252.20 and 42,414,281.20 is: 63,621,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,164,834.80 : 207,247,252.20 = 42,414,281.20 : x
  2. Step 2: Convert to fraction form
    138,164,834.80/207,247,252.20 = 42,414,281.20/x
  3. Step 3: Cross multiply
    138,164,834.80x = 207,247,252.20 × 42,414,281.20
  4. Step 4: Simplify right side
    138,164,834.80x = 8,790,243,232,738,119
  5. Step 5: Solve for x
    x = 8,790,243,232,738,119/138,164,834.80
  6. Step 6: Final answer
    x = 63,621,421.80

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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.