Home / 131,434,689.30-196,818,317.66-78,879,279.02

Finding the Fourth Proportional to 131,434,689.30, 196,818,317.66 and 78,879,279.02

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Solution

The fourth proportional to 131,434,689.30, 196,818,317.66 and 78,879,279.02 is: 118,118,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,434,689.30 : 196,818,317.66 = 78,879,279.02 : x
  2. Step 2: Convert to fraction form
    131,434,689.30/196,818,317.66 = 78,879,279.02/x
  3. Step 3: Cross multiply
    131,434,689.30x = 196,818,317.66 × 78,879,279.02
  4. Step 4: Simplify right side
    131,434,689.30x = 15,524,886,994,190,778
  5. Step 5: Solve for x
    x = 15,524,886,994,190,778/131,434,689.30
  6. Step 6: Final answer
    x = 118,118,641.86

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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.