Home / 101,320.57-139,818.03-55,996.21

Finding the Fourth Proportional to 101,320.57, 139,818.03 and 55,996.21

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Solution

The fourth proportional to 101,320.57, 139,818.03 and 55,996.21 is: 77,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,320.57 : 139,818.03 = 55,996.21 : x
  2. Step 2: Convert to fraction form
    101,320.57/139,818.03 = 55,996.21/x
  3. Step 3: Cross multiply
    101,320.57x = 139,818.03 × 55,996.21
  4. Step 4: Simplify right side
    101,320.57x = 7,829,279,070.58
  5. Step 5: Solve for x
    x = 7,829,279,070.58/101,320.57
  6. Step 6: Final answer
    x = 77,272.36

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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.