Home / 158,147.40-218,215.71-93,669.78

Finding the Fourth Proportional to 158,147.40, 218,215.71 and 93,669.78

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Solution

The fourth proportional to 158,147.40, 218,215.71 and 93,669.78 is: 129,247.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,147.40 : 218,215.71 = 93,669.78 : x
  2. Step 2: Convert to fraction form
    158,147.40/218,215.71 = 93,669.78/x
  3. Step 3: Cross multiply
    158,147.40x = 218,215.71 × 93,669.78
  4. Step 4: Simplify right side
    158,147.40x = 20,440,217,548.24
  5. Step 5: Solve for x
    x = 20,440,217,548.24/158,147.40
  6. Step 6: Final answer
    x = 129,247.89

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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.