Home / 78,301,256.20-117,451,884.30-71,120,897.80

Finding the Fourth Proportional to 78,301,256.20, 117,451,884.30 and 71,120,897.80

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Solution

The fourth proportional to 78,301,256.20, 117,451,884.30 and 71,120,897.80 is: 106,681,346.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301,256.20 : 117,451,884.30 = 71,120,897.80 : x
  2. Step 2: Convert to fraction form
    78,301,256.20/117,451,884.30 = 71,120,897.80/x
  3. Step 3: Cross multiply
    78,301,256.20x = 117,451,884.30 × 71,120,897.80
  4. Step 4: Simplify right side
    78,301,256.20x = 8,353,283,459,717,724
  5. Step 5: Solve for x
    x = 8,353,283,459,717,724/78,301,256.20
  6. Step 6: Final answer
    x = 106,681,346.70

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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.