Home / 158,021.19-218,089.31-90,062.60

Finding the Fourth Proportional to 158,021.19, 218,089.31 and 90,062.60

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Solution

The fourth proportional to 158,021.19, 218,089.31 and 90,062.60 is: 124,297.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,021.19 : 218,089.31 = 90,062.60 : x
  2. Step 2: Convert to fraction form
    158,021.19/218,089.31 = 90,062.60/x
  3. Step 3: Cross multiply
    158,021.19x = 218,089.31 × 90,062.60
  4. Step 4: Simplify right side
    158,021.19x = 19,641,688,750.05
  5. Step 5: Solve for x
    x = 19,641,688,750.05/158,021.19
  6. Step 6: Final answer
    x = 124,297.82

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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.