Home / 121,113.50-180,895.08-109,698.36

Finding the Fourth Proportional to 121,113.50, 180,895.08 and 109,698.36

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Solution

The fourth proportional to 121,113.50, 180,895.08 and 109,698.36 is: 163,845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,113.50 : 180,895.08 = 109,698.36 : x
  2. Step 2: Convert to fraction form
    121,113.50/180,895.08 = 109,698.36/x
  3. Step 3: Cross multiply
    121,113.50x = 180,895.08 × 109,698.36
  4. Step 4: Simplify right side
    121,113.50x = 19,843,893,608.07
  5. Step 5: Solve for x
    x = 19,843,893,608.07/121,113.50
  6. Step 6: Final answer
    x = 163,845.44

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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.