Home / 90,753,090.90-136,129,636.35-87,225,897.30

Finding the Fourth Proportional to 90,753,090.90, 136,129,636.35 and 87,225,897.30

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Solution

The fourth proportional to 90,753,090.90, 136,129,636.35 and 87,225,897.30 is: 130,838,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,753,090.90 : 136,129,636.35 = 87,225,897.30 : x
  2. Step 2: Convert to fraction form
    90,753,090.90/136,129,636.35 = 87,225,897.30/x
  3. Step 3: Cross multiply
    90,753,090.90x = 136,129,636.35 × 87,225,897.30
  4. Step 4: Simplify right side
    90,753,090.90x = 11,874,029,679,751,446
  5. Step 5: Solve for x
    x = 11,874,029,679,751,446/90,753,090.90
  6. Step 6: Final answer
    x = 130,838,845.95

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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.