Home / 84,985,984.80-127,478,977.20-77,900,104.80

Finding the Fourth Proportional to 84,985,984.80, 127,478,977.20 and 77,900,104.80

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Solution

The fourth proportional to 84,985,984.80, 127,478,977.20 and 77,900,104.80 is: 116,850,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985,984.80 : 127,478,977.20 = 77,900,104.80 : x
  2. Step 2: Convert to fraction form
    84,985,984.80/127,478,977.20 = 77,900,104.80/x
  3. Step 3: Cross multiply
    84,985,984.80x = 127,478,977.20 × 77,900,104.80
  4. Step 4: Simplify right side
    84,985,984.80x = 9,930,625,683,676,810
  5. Step 5: Solve for x
    x = 9,930,625,683,676,810/84,985,984.80
  6. Step 6: Final answer
    x = 116,850,157.20

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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.