Home / 112,978,892.20-169,468,338.30-87,438,231.40

Finding the Fourth Proportional to 112,978,892.20, 169,468,338.30 and 87,438,231.40

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Solution

The fourth proportional to 112,978,892.20, 169,468,338.30 and 87,438,231.40 is: 131,157,347.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,978,892.20 : 169,468,338.30 = 87,438,231.40 : x
  2. Step 2: Convert to fraction form
    112,978,892.20/169,468,338.30 = 87,438,231.40/x
  3. Step 3: Cross multiply
    112,978,892.20x = 169,468,338.30 × 87,438,231.40
  4. Step 4: Simplify right side
    112,978,892.20x = 14,818,011,779,248,884
  5. Step 5: Solve for x
    x = 14,818,011,779,248,884/112,978,892.20
  6. Step 6: Final answer
    x = 131,157,347.10

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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.