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Finding the Fourth Proportional to 85,109.10, 127,663.65 and 75,923.70

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Solution

The fourth proportional to 85,109.10, 127,663.65 and 75,923.70 is: 113,885.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,109.10 : 127,663.65 = 75,923.70 : x
  2. Step 2: Convert to fraction form
    85,109.10/127,663.65 = 75,923.70/x
  3. Step 3: Cross multiply
    85,109.10x = 127,663.65 × 75,923.70
  4. Step 4: Simplify right side
    85,109.10x = 9,692,696,663.51
  5. Step 5: Solve for x
    x = 9,692,696,663.51/85,109.10
  6. Step 6: Final answer
    x = 113,885.55

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1.5x scale

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.