Home / 139,968,132.80-209,952,199.20-71,817,713.60

Finding the Fourth Proportional to 139,968,132.80, 209,952,199.20 and 71,817,713.60

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Solution

The fourth proportional to 139,968,132.80, 209,952,199.20 and 71,817,713.60 is: 107,726,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,132.80 : 209,952,199.20 = 71,817,713.60 : x
  2. Step 2: Convert to fraction form
    139,968,132.80/209,952,199.20 = 71,817,713.60/x
  3. Step 3: Cross multiply
    139,968,132.80x = 209,952,199.20 × 71,817,713.60
  4. Step 4: Simplify right side
    139,968,132.80x = 15,078,286,911,835,748
  5. Step 5: Solve for x
    x = 15,078,286,911,835,748/139,968,132.80
  6. Step 6: Final answer
    x = 107,726,570.40

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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.