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Finding the Fourth Proportional to 101,632.31, 140,301.35 and 71,443.51

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Solution

The fourth proportional to 101,632.31, 140,301.35 and 71,443.51 is: 98,626.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,632.31 : 140,301.35 = 71,443.51 : x
  2. Step 2: Convert to fraction form
    101,632.31/140,301.35 = 71,443.51/x
  3. Step 3: Cross multiply
    101,632.31x = 140,301.35 × 71,443.51
  4. Step 4: Simplify right side
    101,632.31x = 10,023,620,895.27
  5. Step 5: Solve for x
    x = 10,023,620,895.27/101,632.31
  6. Step 6: Final answer
    x = 98,626.32

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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.