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Finding the Fourth Proportional to 158,622.84, 218,899.02 and 90,660.90

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Solution

The fourth proportional to 158,622.84, 218,899.02 and 90,660.90 is: 125,111.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,622.84 : 218,899.02 = 90,660.90 : x
  2. Step 2: Convert to fraction form
    158,622.84/218,899.02 = 90,660.90/x
  3. Step 3: Cross multiply
    158,622.84x = 218,899.02 × 90,660.90
  4. Step 4: Simplify right side
    158,622.84x = 19,845,582,162.32
  5. Step 5: Solve for x
    x = 19,845,582,162.32/158,622.84
  6. Step 6: Final answer
    x = 125,111.76

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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.