Home / 91,277.82-136,752.30-85,788.18

Finding the Fourth Proportional to 91,277.82, 136,752.30 and 85,788.18

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Solution

The fourth proportional to 91,277.82, 136,752.30 and 85,788.18 is: 128,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,277.82 : 136,752.30 = 85,788.18 : x
  2. Step 2: Convert to fraction form
    91,277.82/136,752.30 = 85,788.18/x
  3. Step 3: Cross multiply
    91,277.82x = 136,752.30 × 85,788.18
  4. Step 4: Simplify right side
    91,277.82x = 11,731,730,927.81
  5. Step 5: Solve for x
    x = 11,731,730,927.81/91,277.82
  6. Step 6: Final answer
    x = 128,527.73

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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.