Home / 154,068.12-212,623.92-90,382.68

Finding the Fourth Proportional to 154,068.12, 212,623.92 and 90,382.68

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Solution

The fourth proportional to 154,068.12, 212,623.92 and 90,382.68 is: 124,733.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,068.12 : 212,623.92 = 90,382.68 : x
  2. Step 2: Convert to fraction form
    154,068.12/212,623.92 = 90,382.68/x
  3. Step 3: Cross multiply
    154,068.12x = 212,623.92 × 90,382.68
  4. Step 4: Simplify right side
    154,068.12x = 19,217,519,721.71
  5. Step 5: Solve for x
    x = 19,217,519,721.71/154,068.12
  6. Step 6: Final answer
    x = 124,733.91

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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.