Home / 208,079,139.30-312,024,230.55-78,643,731.30

Finding the Fourth Proportional to 208,079,139.30, 312,024,230.55 and 78,643,731.30

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Solution

The fourth proportional to 208,079,139.30, 312,024,230.55 and 78,643,731.30 is: 117,929,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,079,139.30 : 312,024,230.55 = 78,643,731.30 : x
  2. Step 2: Convert to fraction form
    208,079,139.30/312,024,230.55 = 78,643,731.30/x
  3. Step 3: Cross multiply
    208,079,139.30x = 312,024,230.55 × 78,643,731.30
  4. Step 4: Simplify right side
    208,079,139.30x = 24,538,749,746,463,452
  5. Step 5: Solve for x
    x = 24,538,749,746,463,452/208,079,139.30
  6. Step 6: Final answer
    x = 117,929,888.74

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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.