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Finding the Fourth Proportional to 101,960.16, 140,686.32 and 61,668.24

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Solution

The fourth proportional to 101,960.16, 140,686.32 and 61,668.24 is: 85,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,960.16 : 140,686.32 = 61,668.24 : x
  2. Step 2: Convert to fraction form
    101,960.16/140,686.32 = 61,668.24/x
  3. Step 3: Cross multiply
    101,960.16x = 140,686.32 × 61,668.24
  4. Step 4: Simplify right side
    101,960.16x = 8,675,877,746.48
  5. Step 5: Solve for x
    x = 8,675,877,746.48/101,960.16
  6. Step 6: Final answer
    x = 85,090.86

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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.