Home / 100,530.24-138,715.10-58,092.72

Finding the Fourth Proportional to 100,530.24, 138,715.10 and 58,092.72

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Solution

The fourth proportional to 100,530.24, 138,715.10 and 58,092.72 is: 80,158.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,530.24 : 138,715.10 = 58,092.72 : x
  2. Step 2: Convert to fraction form
    100,530.24/138,715.10 = 58,092.72/x
  3. Step 3: Cross multiply
    100,530.24x = 138,715.10 × 58,092.72
  4. Step 4: Simplify right side
    100,530.24x = 8,058,337,464.07
  5. Step 5: Solve for x
    x = 8,058,337,464.07/100,530.24
  6. Step 6: Final answer
    x = 80,158.34

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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.