Home / 85,810,000.90-128,715,001.35-76,404,151.30

Finding the Fourth Proportional to 85,810,000.90, 128,715,001.35 and 76,404,151.30

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Solution

The fourth proportional to 85,810,000.90, 128,715,001.35 and 76,404,151.30 is: 114,606,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,810,000.90 : 128,715,001.35 = 76,404,151.30 : x
  2. Step 2: Convert to fraction form
    85,810,000.90/128,715,001.35 = 76,404,151.30/x
  3. Step 3: Cross multiply
    85,810,000.90x = 128,715,001.35 × 76,404,151.30
  4. Step 4: Simplify right side
    85,810,000.90x = 9,834,360,437,725,104
  5. Step 5: Solve for x
    x = 9,834,360,437,725,104/85,810,000.90
  6. Step 6: Final answer
    x = 114,606,226.95

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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.