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Finding the Fourth Proportional to 91,537.66, 136,904.73 and 79,679.74

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Solution

The fourth proportional to 91,537.66, 136,904.73 and 79,679.74 is: 119,169.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,537.66 : 136,904.73 = 79,679.74 : x
  2. Step 2: Convert to fraction form
    91,537.66/136,904.73 = 79,679.74/x
  3. Step 3: Cross multiply
    91,537.66x = 136,904.73 × 79,679.74
  4. Step 4: Simplify right side
    91,537.66x = 10,908,533,291.17
  5. Step 5: Solve for x
    x = 10,908,533,291.17/91,537.66
  6. Step 6: Final answer
    x = 119,169.89

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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.