Home / 78,301,364.20-117,452,046.30-71,121,005.80

Finding the Fourth Proportional to 78,301,364.20, 117,452,046.30 and 71,121,005.80

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Solution

The fourth proportional to 78,301,364.20, 117,452,046.30 and 71,121,005.80 is: 106,681,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301,364.20 : 117,452,046.30 = 71,121,005.80 : x
  2. Step 2: Convert to fraction form
    78,301,364.20/117,452,046.30 = 71,121,005.80/x
  3. Step 3: Cross multiply
    78,301,364.20x = 117,452,046.30 × 71,121,005.80
  4. Step 4: Simplify right side
    78,301,364.20x = 8,353,307,666,124,168
  5. Step 5: Solve for x
    x = 8,353,307,666,124,168/78,301,364.20
  6. Step 6: Final answer
    x = 106,681,508.70

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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.