Home / 154,379.16-213,053.04-86,403.96

Finding the Fourth Proportional to 154,379.16, 213,053.04 and 86,403.96

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Solution

The fourth proportional to 154,379.16, 213,053.04 and 86,403.96 is: 119,242.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,379.16 : 213,053.04 = 86,403.96 : x
  2. Step 2: Convert to fraction form
    154,379.16/213,053.04 = 86,403.96/x
  3. Step 3: Cross multiply
    154,379.16x = 213,053.04 × 86,403.96
  4. Step 4: Simplify right side
    154,379.16x = 18,408,626,346.04
  5. Step 5: Solve for x
    x = 18,408,626,346.04/154,379.16
  6. Step 6: Final answer
    x = 119,242.95

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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.