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Finding the Fourth Proportional to 101,687.55, 140,312.48 and 63,935.07

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Solution

The fourth proportional to 101,687.55, 140,312.48 and 63,935.07 is: 88,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,687.55 : 140,312.48 = 63,935.07 : x
  2. Step 2: Convert to fraction form
    101,687.55/140,312.48 = 63,935.07/x
  3. Step 3: Cross multiply
    101,687.55x = 140,312.48 × 63,935.07
  4. Step 4: Simplify right side
    101,687.55x = 8,970,888,230.67
  5. Step 5: Solve for x
    x = 8,970,888,230.67/101,687.55
  6. Step 6: Final answer
    x = 88,220.12

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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.