Home / 131,429,765.60-196,766,734.80-80,411,429.60

Finding the Fourth Proportional to 131,429,765.60, 196,766,734.80 and 80,411,429.60

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Solution

The fourth proportional to 131,429,765.60, 196,766,734.80 and 80,411,429.60 is: 120,385,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,429,765.60 : 196,766,734.80 = 80,411,429.60 : x
  2. Step 2: Convert to fraction form
    131,429,765.60/196,766,734.80 = 80,411,429.60/x
  3. Step 3: Cross multiply
    131,429,765.60x = 196,766,734.80 × 80,411,429.60
  4. Step 4: Simplify right side
    131,429,765.60x = 15,822,294,442,992,070
  5. Step 5: Solve for x
    x = 15,822,294,442,992,070/131,429,765.60
  6. Step 6: Final answer
    x = 120,385,929.10

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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.