Home / 130,658.05-195,491.42-77,378.55

Finding the Fourth Proportional to 130,658.05, 195,491.42 and 77,378.55

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Solution

The fourth proportional to 130,658.05, 195,491.42 and 77,378.55 is: 115,774.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,658.05 : 195,491.42 = 77,378.55 : x
  2. Step 2: Convert to fraction form
    130,658.05/195,491.42 = 77,378.55/x
  3. Step 3: Cross multiply
    130,658.05x = 195,491.42 × 77,378.55
  4. Step 4: Simplify right side
    130,658.05x = 15,126,842,617.04
  5. Step 5: Solve for x
    x = 15,126,842,617.04/130,658.05
  6. Step 6: Final answer
    x = 115,774.29

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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.