Home / 205,872,031.20-308,920,021.20-84,715,730.40

Finding the Fourth Proportional to 205,872,031.20, 308,920,021.20 and 84,715,730.40

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Solution

The fourth proportional to 205,872,031.20, 308,920,021.20 and 84,715,730.40 is: 127,119,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,872,031.20 : 308,920,021.20 = 84,715,730.40 : x
  2. Step 2: Convert to fraction form
    205,872,031.20/308,920,021.20 = 84,715,730.40/x
  3. Step 3: Cross multiply
    205,872,031.20x = 308,920,021.20 × 84,715,730.40
  4. Step 4: Simplify right side
    205,872,031.20x = 26,170,385,231,141,484
  5. Step 5: Solve for x
    x = 26,170,385,231,141,484/205,872,031.20
  6. Step 6: Final answer
    x = 127,119,672.73

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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.