Home / 121,116.50-180,899.55-109,701.36

Finding the Fourth Proportional to 121,116.50, 180,899.55 and 109,701.36

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Solution

The fourth proportional to 121,116.50, 180,899.55 and 109,701.36 is: 163,849.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,116.50 : 180,899.55 = 109,701.36 : x
  2. Step 2: Convert to fraction form
    121,116.50/180,899.55 = 109,701.36/x
  3. Step 3: Cross multiply
    121,116.50x = 180,899.55 × 109,701.36
  4. Step 4: Simplify right side
    121,116.50x = 19,844,926,658.39
  5. Step 5: Solve for x
    x = 19,844,926,658.39/121,116.50
  6. Step 6: Final answer
    x = 163,849.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.