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Finding the Fourth Proportional to 101,456.44, 139,943.46 and 61,142.92

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Solution

The fourth proportional to 101,456.44, 139,943.46 and 61,142.92 is: 84,337.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,456.44 : 139,943.46 = 61,142.92 : x
  2. Step 2: Convert to fraction form
    101,456.44/139,943.46 = 61,142.92/x
  3. Step 3: Cross multiply
    101,456.44x = 139,943.46 × 61,142.92
  4. Step 4: Simplify right side
    101,456.44x = 8,556,551,779.30
  5. Step 5: Solve for x
    x = 8,556,551,779.30/101,456.44
  6. Step 6: Final answer
    x = 84,337.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.