Home / 210,639.20-290,682.12-115,146.32

Finding the Fourth Proportional to 210,639.20, 290,682.12 and 115,146.32

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Solution

The fourth proportional to 210,639.20, 290,682.12 and 115,146.32 is: 158,901.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,639.20 : 290,682.12 = 115,146.32 : x
  2. Step 2: Convert to fraction form
    210,639.20/290,682.12 = 115,146.32/x
  3. Step 3: Cross multiply
    210,639.20x = 290,682.12 × 115,146.32
  4. Step 4: Simplify right side
    210,639.20x = 33,470,976,407.80
  5. Step 5: Solve for x
    x = 33,470,976,407.80/210,639.20
  6. Step 6: Final answer
    x = 158,901.93

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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.