Home / 103,439.52-142,742.40-63,220.48

Finding the Fourth Proportional to 103,439.52, 142,742.40 and 63,220.48

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Solution

The fourth proportional to 103,439.52, 142,742.40 and 63,220.48 is: 87,241.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,439.52 : 142,742.40 = 63,220.48 : x
  2. Step 2: Convert to fraction form
    103,439.52/142,742.40 = 63,220.48/x
  3. Step 3: Cross multiply
    103,439.52x = 142,742.40 × 63,220.48
  4. Step 4: Simplify right side
    103,439.52x = 9,024,243,044.35
  5. Step 5: Solve for x
    x = 9,024,243,044.35/103,439.52
  6. Step 6: Final answer
    x = 87,241.73

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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.