Home / 139,969,158.30-209,953,737.45-85,549,599.90

Finding the Fourth Proportional to 139,969,158.30, 209,953,737.45 and 85,549,599.90

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Solution

The fourth proportional to 139,969,158.30, 209,953,737.45 and 85,549,599.90 is: 128,324,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,158.30 : 209,953,737.45 = 85,549,599.90 : x
  2. Step 2: Convert to fraction form
    139,969,158.30/209,953,737.45 = 85,549,599.90/x
  3. Step 3: Cross multiply
    139,969,158.30x = 209,953,737.45 × 85,549,599.90
  4. Step 4: Simplify right side
    139,969,158.30x = 17,961,458,236,357,146
  5. Step 5: Solve for x
    x = 17,961,458,236,357,146/139,969,158.30
  6. Step 6: Final answer
    x = 128,324,399.85

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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.