Home / 121,411.06-167,574.09-78,895.78

Finding the Fourth Proportional to 121,411.06, 167,574.09 and 78,895.78

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Solution

The fourth proportional to 121,411.06, 167,574.09 and 78,895.78 is: 108,893.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,411.06 : 167,574.09 = 78,895.78 : x
  2. Step 2: Convert to fraction form
    121,411.06/167,574.09 = 78,895.78/x
  3. Step 3: Cross multiply
    121,411.06x = 167,574.09 × 78,895.78
  4. Step 4: Simplify right side
    121,411.06x = 13,220,888,538.34
  5. Step 5: Solve for x
    x = 13,220,888,538.34/121,411.06
  6. Step 6: Final answer
    x = 108,893.61

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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.