Home / 101,385.12-139,908.68-56,061.60

Finding the Fourth Proportional to 101,385.12, 139,908.68 and 56,061.60

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Solution

The fourth proportional to 101,385.12, 139,908.68 and 56,061.60 is: 77,363.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,385.12 : 139,908.68 = 56,061.60 : x
  2. Step 2: Convert to fraction form
    101,385.12/139,908.68 = 56,061.60/x
  3. Step 3: Cross multiply
    101,385.12x = 139,908.68 × 56,061.60
  4. Step 4: Simplify right side
    101,385.12x = 7,843,504,174.38
  5. Step 5: Solve for x
    x = 7,843,504,174.38/101,385.12
  6. Step 6: Final answer
    x = 77,363.46

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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.