Home / 158,404.50-218,544.39-90,372.60

Finding the Fourth Proportional to 158,404.50, 218,544.39 and 90,372.60

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Solution

The fourth proportional to 158,404.50, 218,544.39 and 90,372.60 is: 124,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,404.50 : 218,544.39 = 90,372.60 : x
  2. Step 2: Convert to fraction form
    158,404.50/218,544.39 = 90,372.60/x
  3. Step 3: Cross multiply
    158,404.50x = 218,544.39 × 90,372.60
  4. Step 4: Simplify right side
    158,404.50x = 19,750,424,739.71
  5. Step 5: Solve for x
    x = 19,750,424,739.71/158,404.50
  6. Step 6: Final answer
    x = 124,683.48

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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.