Home / 139,011,625.20-208,517,437.80-128,262,082.80

Finding the Fourth Proportional to 139,011,625.20, 208,517,437.80 and 128,262,082.80

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Solution

The fourth proportional to 139,011,625.20, 208,517,437.80 and 128,262,082.80 is: 192,393,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,011,625.20 : 208,517,437.80 = 128,262,082.80 : x
  2. Step 2: Convert to fraction form
    139,011,625.20/208,517,437.80 = 128,262,082.80/x
  3. Step 3: Cross multiply
    139,011,625.20x = 208,517,437.80 × 128,262,082.80
  4. Step 4: Simplify right side
    139,011,625.20x = 26,744,880,872,347,452
  5. Step 5: Solve for x
    x = 26,744,880,872,347,452/139,011,625.20
  6. Step 6: Final answer
    x = 192,393,124.20

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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.