Home / 90,985,425.20-136,478,137.80-74,829,618.80

Finding the Fourth Proportional to 90,985,425.20, 136,478,137.80 and 74,829,618.80

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Solution

The fourth proportional to 90,985,425.20, 136,478,137.80 and 74,829,618.80 is: 112,244,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,985,425.20 : 136,478,137.80 = 74,829,618.80 : x
  2. Step 2: Convert to fraction form
    90,985,425.20/136,478,137.80 = 74,829,618.80/x
  3. Step 3: Cross multiply
    90,985,425.20x = 136,478,137.80 × 74,829,618.80
  4. Step 4: Simplify right side
    90,985,425.20x = 10,212,607,026,107,872
  5. Step 5: Solve for x
    x = 10,212,607,026,107,872/90,985,425.20
  6. Step 6: Final answer
    x = 112,244,428.20

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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.