Home / 103,775.28-143,213.40-61,370.16

Finding the Fourth Proportional to 103,775.28, 143,213.40 and 61,370.16

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Solution

The fourth proportional to 103,775.28, 143,213.40 and 61,370.16 is: 84,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,775.28 : 143,213.40 = 61,370.16 : x
  2. Step 2: Convert to fraction form
    103,775.28/143,213.40 = 61,370.16/x
  3. Step 3: Cross multiply
    103,775.28x = 143,213.40 × 61,370.16
  4. Step 4: Simplify right side
    103,775.28x = 8,789,029,272.14
  5. Step 5: Solve for x
    x = 8,789,029,272.14/103,775.28
  6. Step 6: Final answer
    x = 84,692.90

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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.