Home / 103,612.27-142,908.40-71,357.14

Finding the Fourth Proportional to 103,612.27, 142,908.40 and 71,357.14

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Solution

The fourth proportional to 103,612.27, 142,908.40 and 71,357.14 is: 98,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.27 : 142,908.40 = 71,357.14 : x
  2. Step 2: Convert to fraction form
    103,612.27/142,908.40 = 71,357.14/x
  3. Step 3: Cross multiply
    103,612.27x = 142,908.40 × 71,357.14
  4. Step 4: Simplify right side
    103,612.27x = 10,197,534,705.98
  5. Step 5: Solve for x
    x = 10,197,534,705.98/103,612.27
  6. Step 6: Final answer
    x = 98,420.15

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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.