Home / 154,421.10-213,104.73-86,436.39

Finding the Fourth Proportional to 154,421.10, 213,104.73 and 86,436.39

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Solution

The fourth proportional to 154,421.10, 213,104.73 and 86,436.39 is: 119,284.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.10 : 213,104.73 = 86,436.39 : x
  2. Step 2: Convert to fraction form
    154,421.10/213,104.73 = 86,436.39/x
  3. Step 3: Cross multiply
    154,421.10x = 213,104.73 × 86,436.39
  4. Step 4: Simplify right side
    154,421.10x = 18,420,003,553.12
  5. Step 5: Solve for x
    x = 18,420,003,553.12/154,421.10
  6. Step 6: Final answer
    x = 119,284.24

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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.