Home / 103,314.15-154,807.20-68,212.80

Finding the Fourth Proportional to 103,314.15, 154,807.20 and 68,212.80

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Solution

The fourth proportional to 103,314.15, 154,807.20 and 68,212.80 is: 102,210.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,314.15 : 154,807.20 = 68,212.80 : x
  2. Step 2: Convert to fraction form
    103,314.15/154,807.20 = 68,212.80/x
  3. Step 3: Cross multiply
    103,314.15x = 154,807.20 × 68,212.80
  4. Step 4: Simplify right side
    103,314.15x = 10,559,832,572.16
  5. Step 5: Solve for x
    x = 10,559,832,572.16/103,314.15
  6. Step 6: Final answer
    x = 102,210.90

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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.