Home / 121,209.60-181,846.80-108,152.40

Finding the Fourth Proportional to 121,209.60, 181,846.80 and 108,152.40

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Solution

The fourth proportional to 121,209.60, 181,846.80 and 108,152.40 is: 162,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,209.60 : 181,846.80 = 108,152.40 : x
  2. Step 2: Convert to fraction form
    121,209.60/181,846.80 = 108,152.40/x
  3. Step 3: Cross multiply
    121,209.60x = 181,846.80 × 108,152.40
  4. Step 4: Simplify right side
    121,209.60x = 19,667,167,852.32
  5. Step 5: Solve for x
    x = 19,667,167,852.32/121,209.60
  6. Step 6: Final answer
    x = 162,257.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.