Home / 110,921.88-153,140.04-72,196.68

Finding the Fourth Proportional to 110,921.88, 153,140.04 and 72,196.68

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Solution

The fourth proportional to 110,921.88, 153,140.04 and 72,196.68 is: 99,675.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,921.88 : 153,140.04 = 72,196.68 : x
  2. Step 2: Convert to fraction form
    110,921.88/153,140.04 = 72,196.68/x
  3. Step 3: Cross multiply
    110,921.88x = 153,140.04 × 72,196.68
  4. Step 4: Simplify right side
    110,921.88x = 11,056,202,463.07
  5. Step 5: Solve for x
    x = 11,056,202,463.07/110,921.88
  6. Step 6: Final answer
    x = 99,675.58

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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.