Home / 153,781.41-212,217.67-85,794.34

Finding the Fourth Proportional to 153,781.41, 212,217.67 and 85,794.34

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Solution

The fourth proportional to 153,781.41, 212,217.67 and 85,794.34 is: 118,395.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,781.41 : 212,217.67 = 85,794.34 : x
  2. Step 2: Convert to fraction form
    153,781.41/212,217.67 = 85,794.34/x
  3. Step 3: Cross multiply
    153,781.41x = 212,217.67 × 85,794.34
  4. Step 4: Simplify right side
    153,781.41x = 18,207,074,908.59
  5. Step 5: Solve for x
    x = 18,207,074,908.59/153,781.41
  6. Step 6: Final answer
    x = 118,395.81

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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.