Home / 101,625.12-140,143.23-77,487.93

Finding the Fourth Proportional to 101,625.12, 140,143.23 and 77,487.93

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Solution

The fourth proportional to 101,625.12, 140,143.23 and 77,487.93 is: 106,857.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,625.12 : 140,143.23 = 77,487.93 : x
  2. Step 2: Convert to fraction form
    101,625.12/140,143.23 = 77,487.93/x
  3. Step 3: Cross multiply
    101,625.12x = 140,143.23 × 77,487.93
  4. Step 4: Simplify right side
    101,625.12x = 10,859,408,796.21
  5. Step 5: Solve for x
    x = 10,859,408,796.21/101,625.12
  6. Step 6: Final answer
    x = 106,857.52

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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.