Home / 86,128.08-129,188.52-29,981.04

Finding the Fourth Proportional to 86,128.08, 129,188.52 and 29,981.04

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Solution

The fourth proportional to 86,128.08, 129,188.52 and 29,981.04 is: 44,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,128.08 : 129,188.52 = 29,981.04 : x
  2. Step 2: Convert to fraction form
    86,128.08/129,188.52 = 29,981.04/x
  3. Step 3: Cross multiply
    86,128.08x = 129,188.52 × 29,981.04
  4. Step 4: Simplify right side
    86,128.08x = 3,873,206,185.66
  5. Step 5: Solve for x
    x = 3,873,206,185.66/86,128.08
  6. Step 6: Final answer
    x = 44,970.31

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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.