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Finding the Fourth Proportional to 123,430.70, 185,102.85 and 64,246.70

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Solution

The fourth proportional to 123,430.70, 185,102.85 and 64,246.70 is: 96,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,430.70 : 185,102.85 = 64,246.70 : x
  2. Step 2: Convert to fraction form
    123,430.70/185,102.85 = 64,246.70/x
  3. Step 3: Cross multiply
    123,430.70x = 185,102.85 × 64,246.70
  4. Step 4: Simplify right side
    123,430.70x = 11,892,247,273.10
  5. Step 5: Solve for x
    x = 11,892,247,273.10/123,430.70
  6. Step 6: Final answer
    x = 96,347.56

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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.