Home / 154,421.24-213,104.91-86,436.51

Finding the Fourth Proportional to 154,421.24, 213,104.91 and 86,436.51

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Solution

The fourth proportional to 154,421.24, 213,104.91 and 86,436.51 is: 119,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.24 : 213,104.91 = 86,436.51 : x
  2. Step 2: Convert to fraction form
    154,421.24/213,104.91 = 86,436.51/x
  3. Step 3: Cross multiply
    154,421.24x = 213,104.91 × 86,436.51
  4. Step 4: Simplify right side
    154,421.24x = 18,420,044,684.26
  5. Step 5: Solve for x
    x = 18,420,044,684.26/154,421.24
  6. Step 6: Final answer
    x = 119,284.40

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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.