Home / 103,291.60-154,718.70-92,210.80

Finding the Fourth Proportional to 103,291.60, 154,718.70 and 92,210.80

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Solution

The fourth proportional to 103,291.60, 154,718.70 and 92,210.80 is: 138,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,291.60 : 154,718.70 = 92,210.80 : x
  2. Step 2: Convert to fraction form
    103,291.60/154,718.70 = 92,210.80/x
  3. Step 3: Cross multiply
    103,291.60x = 154,718.70 × 92,210.80
  4. Step 4: Simplify right side
    103,291.60x = 14,266,735,101.96
  5. Step 5: Solve for x
    x = 14,266,735,101.96/103,291.60
  6. Step 6: Final answer
    x = 138,120.96

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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.