Home / 101,108.78-139,542.47-58,088.20

Finding the Fourth Proportional to 101,108.78, 139,542.47 and 58,088.20

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Solution

The fourth proportional to 101,108.78, 139,542.47 and 58,088.20 is: 80,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,108.78 : 139,542.47 = 58,088.20 : x
  2. Step 2: Convert to fraction form
    101,108.78/139,542.47 = 58,088.20/x
  3. Step 3: Cross multiply
    101,108.78x = 139,542.47 × 58,088.20
  4. Step 4: Simplify right side
    101,108.78x = 8,105,770,702.22
  5. Step 5: Solve for x
    x = 8,105,770,702.22/101,108.78
  6. Step 6: Final answer
    x = 80,168.81

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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.