Home / 103,172.93-142,334.58-71,286.47

Finding the Fourth Proportional to 103,172.93, 142,334.58 and 71,286.47

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Solution

The fourth proportional to 103,172.93, 142,334.58 and 71,286.47 is: 98,344.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,172.93 : 142,334.58 = 71,286.47 : x
  2. Step 2: Convert to fraction form
    103,172.93/142,334.58 = 71,286.47/x
  3. Step 3: Cross multiply
    103,172.93x = 142,334.58 × 71,286.47
  4. Step 4: Simplify right side
    103,172.93x = 10,146,529,767.13
  5. Step 5: Solve for x
    x = 10,146,529,767.13/103,172.93
  6. Step 6: Final answer
    x = 98,344.88

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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.