Home / 139,061,377.20-208,592,065.80-87,329,204.40

Finding the Fourth Proportional to 139,061,377.20, 208,592,065.80 and 87,329,204.40

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Solution

The fourth proportional to 139,061,377.20, 208,592,065.80 and 87,329,204.40 is: 130,993,806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,061,377.20 : 208,592,065.80 = 87,329,204.40 : x
  2. Step 2: Convert to fraction form
    139,061,377.20/208,592,065.80 = 87,329,204.40/x
  3. Step 3: Cross multiply
    139,061,377.20x = 208,592,065.80 × 87,329,204.40
  4. Step 4: Simplify right side
    139,061,377.20x = 18,216,179,150,466,452
  5. Step 5: Solve for x
    x = 18,216,179,150,466,452/139,061,377.20
  6. Step 6: Final answer
    x = 130,993,806.60

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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.