Home / 154,111.08-212,689.98-90,458.04

Finding the Fourth Proportional to 154,111.08, 212,689.98 and 90,458.04

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Solution

The fourth proportional to 154,111.08, 212,689.98 and 90,458.04 is: 124,841.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,111.08 : 212,689.98 = 90,458.04 : x
  2. Step 2: Convert to fraction form
    154,111.08/212,689.98 = 90,458.04/x
  3. Step 3: Cross multiply
    154,111.08x = 212,689.98 × 90,458.04
  4. Step 4: Simplify right side
    154,111.08x = 19,239,518,718.44
  5. Step 5: Solve for x
    x = 19,239,518,718.44/154,111.08
  6. Step 6: Final answer
    x = 124,841.89

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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.