Home / 103,617.50-142,997.40-61,175.12

Finding the Fourth Proportional to 103,617.50, 142,997.40 and 61,175.12

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Solution

The fourth proportional to 103,617.50, 142,997.40 and 61,175.12 is: 84,424.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.50 : 142,997.40 = 61,175.12 : x
  2. Step 2: Convert to fraction form
    103,617.50/142,997.40 = 61,175.12/x
  3. Step 3: Cross multiply
    103,617.50x = 142,997.40 × 61,175.12
  4. Step 4: Simplify right side
    103,617.50x = 8,747,883,104.69
  5. Step 5: Solve for x
    x = 8,747,883,104.69/103,617.50
  6. Step 6: Final answer
    x = 84,424.77

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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.