Home / 212,752,811.70-319,129,217.55-76,442,642.10

Finding the Fourth Proportional to 212,752,811.70, 319,129,217.55 and 76,442,642.10

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Solution

The fourth proportional to 212,752,811.70, 319,129,217.55 and 76,442,642.10 is: 114,663,963.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,752,811.70 : 319,129,217.55 = 76,442,642.10 : x
  2. Step 2: Convert to fraction form
    212,752,811.70/319,129,217.55 = 76,442,642.10/x
  3. Step 3: Cross multiply
    212,752,811.70x = 319,129,217.55 × 76,442,642.10
  4. Step 4: Simplify right side
    212,752,811.70x = 24,395,080,560,827,688
  5. Step 5: Solve for x
    x = 24,395,080,560,827,688/212,752,811.70
  6. Step 6: Final answer
    x = 114,663,963.15

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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.