Home / 140,219,883.36-193,499,867.52-78,340,687.20

Finding the Fourth Proportional to 140,219,883.36, 193,499,867.52 and 78,340,687.20

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Solution

The fourth proportional to 140,219,883.36, 193,499,867.52 and 78,340,687.20 is: 108,108,152.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,219,883.36 : 193,499,867.52 = 78,340,687.20 : x
  2. Step 2: Convert to fraction form
    140,219,883.36/193,499,867.52 = 78,340,687.20/x
  3. Step 3: Cross multiply
    140,219,883.36x = 193,499,867.52 × 78,340,687.20
  4. Step 4: Simplify right side
    140,219,883.36x = 15,158,912,594,625,762
  5. Step 5: Solve for x
    x = 15,158,912,594,625,762/140,219,883.36
  6. Step 6: Final answer
    x = 108,108,152.93

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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.