Home / 112,347,097.20-168,520,645.80-78,306,879.60

Finding the Fourth Proportional to 112,347,097.20, 168,520,645.80 and 78,306,879.60

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Solution

The fourth proportional to 112,347,097.20, 168,520,645.80 and 78,306,879.60 is: 117,460,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,347,097.20 : 168,520,645.80 = 78,306,879.60 : x
  2. Step 2: Convert to fraction form
    112,347,097.20/168,520,645.80 = 78,306,879.60/x
  3. Step 3: Cross multiply
    112,347,097.20x = 168,520,645.80 × 78,306,879.60
  4. Step 4: Simplify right side
    112,347,097.20x = 13,196,325,920,774,846
  5. Step 5: Solve for x
    x = 13,196,325,920,774,846/112,347,097.20
  6. Step 6: Final answer
    x = 117,460,319.40

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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.