Home / 121,886.40-182,544.48-105,427.20

Finding the Fourth Proportional to 121,886.40, 182,544.48 and 105,427.20

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Solution

The fourth proportional to 121,886.40, 182,544.48 and 105,427.20 is: 157,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,886.40 : 182,544.48 = 105,427.20 : x
  2. Step 2: Convert to fraction form
    121,886.40/182,544.48 = 105,427.20/x
  3. Step 3: Cross multiply
    121,886.40x = 182,544.48 × 105,427.20
  4. Step 4: Simplify right side
    121,886.40x = 19,245,153,401.86
  5. Step 5: Solve for x
    x = 19,245,153,401.86/121,886.40
  6. Step 6: Final answer
    x = 157,894.18

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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.