Home / 112,980.32-169,471.46-28,740.57

Finding the Fourth Proportional to 112,980.32, 169,471.46 and 28,740.57

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Solution

The fourth proportional to 112,980.32, 169,471.46 and 28,740.57 is: 43,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,980.32 : 169,471.46 = 28,740.57 : x
  2. Step 2: Convert to fraction form
    112,980.32/169,471.46 = 28,740.57/x
  3. Step 3: Cross multiply
    112,980.32x = 169,471.46 × 28,740.57
  4. Step 4: Simplify right side
    112,980.32x = 4,870,706,359.13
  5. Step 5: Solve for x
    x = 4,870,706,359.13/112,980.32
  6. Step 6: Final answer
    x = 43,111.10

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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.