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Finding the Fourth Proportional to 158,165.80, 218,266.78 and 90,180.60

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Solution

The fourth proportional to 158,165.80, 218,266.78 and 90,180.60 is: 124,448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,165.80 : 218,266.78 = 90,180.60 : x
  2. Step 2: Convert to fraction form
    158,165.80/218,266.78 = 90,180.60/x
  3. Step 3: Cross multiply
    158,165.80x = 218,266.78 × 90,180.60
  4. Step 4: Simplify right side
    158,165.80x = 19,683,429,180.47
  5. Step 5: Solve for x
    x = 19,683,429,180.47/158,165.80
  6. Step 6: Final answer
    x = 124,448.07

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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.