Home / 210,639.60-290,682.72-115,146.27

Finding the Fourth Proportional to 210,639.60, 290,682.72 and 115,146.27

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Solution

The fourth proportional to 210,639.60, 290,682.72 and 115,146.27 is: 158,901.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,639.60 : 290,682.72 = 115,146.27 : x
  2. Step 2: Convert to fraction form
    210,639.60/290,682.72 = 115,146.27/x
  3. Step 3: Cross multiply
    210,639.60x = 290,682.72 × 115,146.27
  4. Step 4: Simplify right side
    210,639.60x = 33,471,030,961.45
  5. Step 5: Solve for x
    x = 33,471,030,961.45/210,639.60
  6. Step 6: Final answer
    x = 158,901.89

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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.