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Finding the Fourth Proportional to 158,454.36, 218,673 and 90,482.40

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Solution

The fourth proportional to 158,454.36, 218,673 and 90,482.40 is: 124,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,454.36 : 218,673 = 90,482.40 : x
  2. Step 2: Convert to fraction form
    158,454.36/218,673 = 90,482.40/x
  3. Step 3: Cross multiply
    158,454.36x = 218,673 × 90,482.40
  4. Step 4: Simplify right side
    158,454.36x = 19,786,057,855.20
  5. Step 5: Solve for x
    x = 19,786,057,855.20/158,454.36
  6. Step 6: Final answer
    x = 124,869.13

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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.