Home / 109,590.40-151,232.16-61,845.76

Finding the Fourth Proportional to 109,590.40, 151,232.16 and 61,845.76

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Solution

The fourth proportional to 109,590.40, 151,232.16 and 61,845.76 is: 85,345.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,590.40 : 151,232.16 = 61,845.76 : x
  2. Step 2: Convert to fraction form
    109,590.40/151,232.16 = 61,845.76/x
  3. Step 3: Cross multiply
    109,590.40x = 151,232.16 × 61,845.76
  4. Step 4: Simplify right side
    109,590.40x = 9,353,067,871.64
  5. Step 5: Solve for x
    x = 9,353,067,871.64/109,590.40
  6. Step 6: Final answer
    x = 85,345.69

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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.