Home / 86,232,001.70-129,348,002.55-80,521,307.30

Finding the Fourth Proportional to 86,232,001.70, 129,348,002.55 and 80,521,307.30

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Solution

The fourth proportional to 86,232,001.70, 129,348,002.55 and 80,521,307.30 is: 120,781,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,232,001.70 : 129,348,002.55 = 80,521,307.30 : x
  2. Step 2: Convert to fraction form
    86,232,001.70/129,348,002.55 = 80,521,307.30/x
  3. Step 3: Cross multiply
    86,232,001.70x = 129,348,002.55 × 80,521,307.30
  4. Step 4: Simplify right side
    86,232,001.70x = 10,415,270,261,969,732
  5. Step 5: Solve for x
    x = 10,415,270,261,969,732/86,232,001.70
  6. Step 6: Final answer
    x = 120,781,960.95

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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.