Home / 105,143.20-145,096.85-57,396.53

Finding the Fourth Proportional to 105,143.20, 145,096.85 and 57,396.53

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Solution

The fourth proportional to 105,143.20, 145,096.85 and 57,396.53 is: 79,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,143.20 : 145,096.85 = 57,396.53 : x
  2. Step 2: Convert to fraction form
    105,143.20/145,096.85 = 57,396.53/x
  3. Step 3: Cross multiply
    105,143.20x = 145,096.85 × 57,396.53
  4. Step 4: Simplify right side
    105,143.20x = 8,328,056,210.16
  5. Step 5: Solve for x
    x = 8,328,056,210.16/105,143.20
  6. Step 6: Final answer
    x = 79,206.80

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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.