Home / 101,218.02-139,679.28-55,894.88

Finding the Fourth Proportional to 101,218.02, 139,679.28 and 55,894.88

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Solution

The fourth proportional to 101,218.02, 139,679.28 and 55,894.88 is: 77,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,218.02 : 139,679.28 = 55,894.88 : x
  2. Step 2: Convert to fraction form
    101,218.02/139,679.28 = 55,894.88/x
  3. Step 3: Cross multiply
    101,218.02x = 139,679.28 × 55,894.88
  4. Step 4: Simplify right side
    101,218.02x = 7,807,356,594.09
  5. Step 5: Solve for x
    x = 7,807,356,594.09/101,218.02
  6. Step 6: Final answer
    x = 77,134.06

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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.