Home / 154,653.68-213,411.98-90,979.18

Finding the Fourth Proportional to 154,653.68, 213,411.98 and 90,979.18

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Solution

The fourth proportional to 154,653.68, 213,411.98 and 90,979.18 is: 125,545.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,653.68 : 213,411.98 = 90,979.18 : x
  2. Step 2: Convert to fraction form
    154,653.68/213,411.98 = 90,979.18/x
  3. Step 3: Cross multiply
    154,653.68x = 213,411.98 × 90,979.18
  4. Step 4: Simplify right side
    154,653.68x = 19,416,046,942.58
  5. Step 5: Solve for x
    x = 19,416,046,942.58/154,653.68
  6. Step 6: Final answer
    x = 125,545.33

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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.