Home / 154,436.76-213,110.96-86,438.16

Finding the Fourth Proportional to 154,436.76, 213,110.96 and 86,438.16

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Solution

The fourth proportional to 154,436.76, 213,110.96 and 86,438.16 is: 119,278.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,436.76 : 213,110.96 = 86,438.16 : x
  2. Step 2: Convert to fraction form
    154,436.76/213,110.96 = 86,438.16/x
  3. Step 3: Cross multiply
    154,436.76x = 213,110.96 × 86,438.16
  4. Step 4: Simplify right side
    154,436.76x = 18,420,918,826.04
  5. Step 5: Solve for x
    x = 18,420,918,826.04/154,436.76
  6. Step 6: Final answer
    x = 119,278.07

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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.