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Finding the Fourth Proportional to 235,610.75, 325,209.68 and 138,870.83

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Solution

The fourth proportional to 235,610.75, 325,209.68 and 138,870.83 is: 191,681.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,610.75 : 325,209.68 = 138,870.83 : x
  2. Step 2: Convert to fraction form
    235,610.75/325,209.68 = 138,870.83/x
  3. Step 3: Cross multiply
    235,610.75x = 325,209.68 × 138,870.83
  4. Step 4: Simplify right side
    235,610.75x = 45,162,136,906.76
  5. Step 5: Solve for x
    x = 45,162,136,906.76/235,610.75
  6. Step 6: Final answer
    x = 191,681.14

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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.