Home / 252,430.90-378,903.10-126,161.74

Finding the Fourth Proportional to 252,430.90, 378,903.10 and 126,161.74

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Solution

The fourth proportional to 252,430.90, 378,903.10 and 126,161.74 is: 189,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,430.90 : 378,903.10 = 126,161.74 : x
  2. Step 2: Convert to fraction form
    252,430.90/378,903.10 = 126,161.74/x
  3. Step 3: Cross multiply
    252,430.90x = 378,903.10 × 126,161.74
  4. Step 4: Simplify right side
    252,430.90x = 47,803,074,387.39
  5. Step 5: Solve for x
    x = 47,803,074,387.39/252,430.90
  6. Step 6: Final answer
    x = 189,370.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.