Home / 158,021.28-218,061.72-90,054.18

Finding the Fourth Proportional to 158,021.28, 218,061.72 and 90,054.18

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Solution

The fourth proportional to 158,021.28, 218,061.72 and 90,054.18 is: 124,270.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,021.28 : 218,061.72 = 90,054.18 : x
  2. Step 2: Convert to fraction form
    158,021.28/218,061.72 = 90,054.18/x
  3. Step 3: Cross multiply
    158,021.28x = 218,061.72 × 90,054.18
  4. Step 4: Simplify right side
    158,021.28x = 19,637,369,383.99
  5. Step 5: Solve for x
    x = 19,637,369,383.99/158,021.28
  6. Step 6: Final answer
    x = 124,270.41

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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.