Home / 101,178.12-139,618.65-55,848.84

Finding the Fourth Proportional to 101,178.12, 139,618.65 and 55,848.84

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Solution

The fourth proportional to 101,178.12, 139,618.65 and 55,848.84 is: 77,067.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,178.12 : 139,618.65 = 55,848.84 : x
  2. Step 2: Convert to fraction form
    101,178.12/139,618.65 = 55,848.84/x
  3. Step 3: Cross multiply
    101,178.12x = 139,618.65 × 55,848.84
  4. Step 4: Simplify right side
    101,178.12x = 7,797,539,644.87
  5. Step 5: Solve for x
    x = 7,797,539,644.87/101,178.12
  6. Step 6: Final answer
    x = 77,067.45

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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.