Home / 126,542-174,612.80-69,945.68

Finding the Fourth Proportional to 126,542, 174,612.80 and 69,945.68

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Solution

The fourth proportional to 126,542, 174,612.80 and 69,945.68 is: 96,516.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,542 : 174,612.80 = 69,945.68 : x
  2. Step 2: Convert to fraction form
    126,542/174,612.80 = 69,945.68/x
  3. Step 3: Cross multiply
    126,542x = 174,612.80 × 69,945.68
  4. Step 4: Simplify right side
    126,542x = 12,213,411,032.70
  5. Step 5: Solve for x
    x = 12,213,411,032.70/126,542
  6. Step 6: Final answer
    x = 96,516.66

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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.