Home / 154,971.76-213,864.18-86,993.63

Finding the Fourth Proportional to 154,971.76, 213,864.18 and 86,993.63

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Solution

The fourth proportional to 154,971.76, 213,864.18 and 86,993.63 is: 120,052.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,971.76 : 213,864.18 = 86,993.63 : x
  2. Step 2: Convert to fraction form
    154,971.76/213,864.18 = 86,993.63/x
  3. Step 3: Cross multiply
    154,971.76x = 213,864.18 × 86,993.63
  4. Step 4: Simplify right side
    154,971.76x = 18,604,821,345.17
  5. Step 5: Solve for x
    x = 18,604,821,345.17/154,971.76
  6. Step 6: Final answer
    x = 120,052.98

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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.