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Finding the Fourth Proportional to 158,043.87, 218,098.44 and 90,064.89

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Solution

The fourth proportional to 158,043.87, 218,098.44 and 90,064.89 is: 124,288.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,043.87 : 218,098.44 = 90,064.89 : x
  2. Step 2: Convert to fraction form
    158,043.87/218,098.44 = 90,064.89/x
  3. Step 3: Cross multiply
    158,043.87x = 218,098.44 × 90,064.89
  4. Step 4: Simplify right side
    158,043.87x = 19,643,012,007.77
  5. Step 5: Solve for x
    x = 19,643,012,007.77/158,043.87
  6. Step 6: Final answer
    x = 124,288.35

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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.