Home / 86,780.16-120,370.09-84,476.98

Finding the Fourth Proportional to 86,780.16, 120,370.09 and 84,476.98

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Solution

The fourth proportional to 86,780.16, 120,370.09 and 84,476.98 is: 117,175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,780.16 : 120,370.09 = 84,476.98 : x
  2. Step 2: Convert to fraction form
    86,780.16/120,370.09 = 84,476.98/x
  3. Step 3: Cross multiply
    86,780.16x = 120,370.09 × 84,476.98
  4. Step 4: Simplify right side
    86,780.16x = 10,168,500,987.32
  5. Step 5: Solve for x
    x = 10,168,500,987.32/86,780.16
  6. Step 6: Final answer
    x = 117,175.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.