Home / 103,722.18-143,138.44-61,280.62

Finding the Fourth Proportional to 103,722.18, 143,138.44 and 61,280.62

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Solution

The fourth proportional to 103,722.18, 143,138.44 and 61,280.62 is: 84,568.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,722.18 : 143,138.44 = 61,280.62 : x
  2. Step 2: Convert to fraction form
    103,722.18/143,138.44 = 61,280.62/x
  3. Step 3: Cross multiply
    103,722.18x = 143,138.44 × 61,280.62
  4. Step 4: Simplify right side
    103,722.18x = 8,771,612,349.03
  5. Step 5: Solve for x
    x = 8,771,612,349.03/103,722.18
  6. Step 6: Final answer
    x = 84,568.34

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1.5x scale

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.