Home / 154,387.18-213,058.12-86,403.62

Finding the Fourth Proportional to 154,387.18, 213,058.12 and 86,403.62

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Solution

The fourth proportional to 154,387.18, 213,058.12 and 86,403.62 is: 119,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,387.18 : 213,058.12 = 86,403.62 : x
  2. Step 2: Convert to fraction form
    154,387.18/213,058.12 = 86,403.62/x
  3. Step 3: Cross multiply
    154,387.18x = 213,058.12 × 86,403.62
  4. Step 4: Simplify right side
    154,387.18x = 18,408,992,838.39
  5. Step 5: Solve for x
    x = 18,408,992,838.39/154,387.18
  6. Step 6: Final answer
    x = 119,239.13

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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.