Home / 109,437.35-151,018.22-61,690.55

Finding the Fourth Proportional to 109,437.35, 151,018.22 and 61,690.55

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Solution

The fourth proportional to 109,437.35, 151,018.22 and 61,690.55 is: 85,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,437.35 : 151,018.22 = 61,690.55 : x
  2. Step 2: Convert to fraction form
    109,437.35/151,018.22 = 61,690.55/x
  3. Step 3: Cross multiply
    109,437.35x = 151,018.22 × 61,690.55
  4. Step 4: Simplify right side
    109,437.35x = 9,316,396,450.96
  5. Step 5: Solve for x
    x = 9,316,396,450.96/109,437.35
  6. Step 6: Final answer
    x = 85,129.96

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1.5x scale

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.