Home / 126,111.90-174,034.43-72,400.40

Finding the Fourth Proportional to 126,111.90, 174,034.43 and 72,400.40

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Solution

The fourth proportional to 126,111.90, 174,034.43 and 72,400.40 is: 99,912.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,111.90 : 174,034.43 = 72,400.40 : x
  2. Step 2: Convert to fraction form
    126,111.90/174,034.43 = 72,400.40/x
  3. Step 3: Cross multiply
    126,111.90x = 174,034.43 × 72,400.40
  4. Step 4: Simplify right side
    126,111.90x = 12,600,162,345.77
  5. Step 5: Solve for x
    x = 12,600,162,345.77/126,111.90
  6. Step 6: Final answer
    x = 99,912.56

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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.