Home / 8,115,929.60-12,172,972.80-2,132,902.40

Finding the Fourth Proportional to 8,115,929.60, 12,172,972.80 and 2,132,902.40

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Solution

The fourth proportional to 8,115,929.60, 12,172,972.80 and 2,132,902.40 is: 3,199,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115,929.60 : 12,172,972.80 = 2,132,902.40 : x
  2. Step 2: Convert to fraction form
    8,115,929.60/12,172,972.80 = 2,132,902.40/x
  3. Step 3: Cross multiply
    8,115,929.60x = 12,172,972.80 × 2,132,902.40
  4. Step 4: Simplify right side
    8,115,929.60x = 25,963,762,900,254.72
  5. Step 5: Solve for x
    x = 25,963,762,900,254.72/8,115,929.60
  6. Step 6: Final answer
    x = 3,199,111.40

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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.