Home / 154,641.40-213,401.66-90,106.61

Finding the Fourth Proportional to 154,641.40, 213,401.66 and 90,106.61

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Solution

The fourth proportional to 154,641.40, 213,401.66 and 90,106.61 is: 124,345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,641.40 : 213,401.66 = 90,106.61 : x
  2. Step 2: Convert to fraction form
    154,641.40/213,401.66 = 90,106.61/x
  3. Step 3: Cross multiply
    154,641.40x = 213,401.66 × 90,106.61
  4. Step 4: Simplify right side
    154,641.40x = 19,228,898,633.43
  5. Step 5: Solve for x
    x = 19,228,898,633.43/154,641.40
  6. Step 6: Final answer
    x = 124,345.09

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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.