Home / 140,138.64-193,417.61-87,774.80

Finding the Fourth Proportional to 140,138.64, 193,417.61 and 87,774.80

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Solution

The fourth proportional to 140,138.64, 193,417.61 and 87,774.80 is: 121,145.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,138.64 : 193,417.61 = 87,774.80 : x
  2. Step 2: Convert to fraction form
    140,138.64/193,417.61 = 87,774.80/x
  3. Step 3: Cross multiply
    140,138.64x = 193,417.61 × 87,774.80
  4. Step 4: Simplify right side
    140,138.64x = 16,977,190,628.27
  5. Step 5: Solve for x
    x = 16,977,190,628.27/140,138.64
  6. Step 6: Final answer
    x = 121,145.68

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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.