Home / 154,000.21-212,508.29-89,458.76

Finding the Fourth Proportional to 154,000.21, 212,508.29 and 89,458.76

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Solution

The fourth proportional to 154,000.21, 212,508.29 and 89,458.76 is: 123,446.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,000.21 : 212,508.29 = 89,458.76 : x
  2. Step 2: Convert to fraction form
    154,000.21/212,508.29 = 89,458.76/x
  3. Step 3: Cross multiply
    154,000.21x = 212,508.29 × 89,458.76
  4. Step 4: Simplify right side
    154,000.21x = 19,010,727,665.83
  5. Step 5: Solve for x
    x = 19,010,727,665.83/154,000.21
  6. Step 6: Final answer
    x = 123,446.12

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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.