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Finding the Fourth Proportional to 91,262.60, 136,996.30 and 70,577.80

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Solution

The fourth proportional to 91,262.60, 136,996.30 and 70,577.80 is: 105,945.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,262.60 : 136,996.30 = 70,577.80 : x
  2. Step 2: Convert to fraction form
    91,262.60/136,996.30 = 70,577.80/x
  3. Step 3: Cross multiply
    91,262.60x = 136,996.30 × 70,577.80
  4. Step 4: Simplify right side
    91,262.60x = 9,668,897,462.14
  5. Step 5: Solve for x
    x = 9,668,897,462.14/91,262.60
  6. Step 6: Final answer
    x = 105,945.89

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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.