Home / 103,406.90-142,711.97-63,144.23

Finding the Fourth Proportional to 103,406.90, 142,711.97 and 63,144.23

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Solution

The fourth proportional to 103,406.90, 142,711.97 and 63,144.23 is: 87,145.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,406.90 : 142,711.97 = 63,144.23 : x
  2. Step 2: Convert to fraction form
    103,406.90/142,711.97 = 63,144.23/x
  3. Step 3: Cross multiply
    103,406.90x = 142,711.97 × 63,144.23
  4. Step 4: Simplify right side
    103,406.90x = 9,011,436,428.15
  5. Step 5: Solve for x
    x = 9,011,436,428.15/103,406.90
  6. Step 6: Final answer
    x = 87,145.41

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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.