Home / 137,414,234.18-189,632,036.49-78,677,800.22

Finding the Fourth Proportional to 137,414,234.18, 189,632,036.49 and 78,677,800.22

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Solution

The fourth proportional to 137,414,234.18, 189,632,036.49 and 78,677,800.22 is: 108,575,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,414,234.18 : 189,632,036.49 = 78,677,800.22 : x
  2. Step 2: Convert to fraction form
    137,414,234.18/189,632,036.49 = 78,677,800.22/x
  3. Step 3: Cross multiply
    137,414,234.18x = 189,632,036.49 × 78,677,800.22
  4. Step 4: Simplify right side
    137,414,234.18x = 14,919,831,482,271,970
  5. Step 5: Solve for x
    x = 14,919,831,482,271,970/137,414,234.18
  6. Step 6: Final answer
    x = 108,575,589.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.