Home / 154,440.77-213,118.38-86,446.31

Finding the Fourth Proportional to 154,440.77, 213,118.38 and 86,446.31

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Solution

The fourth proportional to 154,440.77, 213,118.38 and 86,446.31 is: 119,290.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,440.77 : 213,118.38 = 86,446.31 : x
  2. Step 2: Convert to fraction form
    154,440.77/213,118.38 = 86,446.31/x
  3. Step 3: Cross multiply
    154,440.77x = 213,118.38 × 86,446.31
  4. Step 4: Simplify right side
    154,440.77x = 18,423,296,478.59
  5. Step 5: Solve for x
    x = 18,423,296,478.59/154,440.77
  6. Step 6: Final answer
    x = 119,290.37

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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.