Home / 99,995.60-149,750.40-53,145.20

Finding the Fourth Proportional to 99,995.60, 149,750.40 and 53,145.20

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Solution

The fourth proportional to 99,995.60, 149,750.40 and 53,145.20 is: 79,588.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,995.60 : 149,750.40 = 53,145.20 : x
  2. Step 2: Convert to fraction form
    99,995.60/149,750.40 = 53,145.20/x
  3. Step 3: Cross multiply
    99,995.60x = 149,750.40 × 53,145.20
  4. Step 4: Simplify right side
    99,995.60x = 7,958,514,958.08
  5. Step 5: Solve for x
    x = 7,958,514,958.08/99,995.60
  6. Step 6: Final answer
    x = 79,588.65

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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.