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Finding the Fourth Proportional to 101,995.30, 140,730.51 and 61,708.06

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Solution

The fourth proportional to 101,995.30, 140,730.51 and 61,708.06 is: 85,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,995.30 : 140,730.51 = 61,708.06 : x
  2. Step 2: Convert to fraction form
    101,995.30/140,730.51 = 61,708.06/x
  3. Step 3: Cross multiply
    101,995.30x = 140,730.51 × 61,708.06
  4. Step 4: Simplify right side
    101,995.30x = 8,684,206,754.91
  5. Step 5: Solve for x
    x = 8,684,206,754.91/101,995.30
  6. Step 6: Final answer
    x = 85,143.21

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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.