Home / 154,064.39-212,589.32-90,378.95

Finding the Fourth Proportional to 154,064.39, 212,589.32 and 90,378.95

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Solution

The fourth proportional to 154,064.39, 212,589.32 and 90,378.95 is: 124,711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.39 : 212,589.32 = 90,378.95 : x
  2. Step 2: Convert to fraction form
    154,064.39/212,589.32 = 90,378.95/x
  3. Step 3: Cross multiply
    154,064.39x = 212,589.32 × 90,378.95
  4. Step 4: Simplify right side
    154,064.39x = 19,213,599,522.81
  5. Step 5: Solve for x
    x = 19,213,599,522.81/154,064.39
  6. Step 6: Final answer
    x = 124,711.49

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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.