Home / 102,780.22-154,186.97-31,686.24

Finding the Fourth Proportional to 102,780.22, 154,186.97 and 31,686.24

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Solution

The fourth proportional to 102,780.22, 154,186.97 and 31,686.24 is: 47,534.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,780.22 : 154,186.97 = 31,686.24 : x
  2. Step 2: Convert to fraction form
    102,780.22/154,186.97 = 31,686.24/x
  3. Step 3: Cross multiply
    102,780.22x = 154,186.97 × 31,686.24
  4. Step 4: Simplify right side
    102,780.22x = 4,885,605,336.29
  5. Step 5: Solve for x
    x = 4,885,605,336.29/102,780.22
  6. Step 6: Final answer
    x = 47,534.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.