Home / 210,103.60-289,967.14-116,978.71

Finding the Fourth Proportional to 210,103.60, 289,967.14 and 116,978.71

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Solution

The fourth proportional to 210,103.60, 289,967.14 and 116,978.71 is: 161,444.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,103.60 : 289,967.14 = 116,978.71 : x
  2. Step 2: Convert to fraction form
    210,103.60/289,967.14 = 116,978.71/x
  3. Step 3: Cross multiply
    210,103.60x = 289,967.14 × 116,978.71
  4. Step 4: Simplify right side
    210,103.60x = 33,919,981,979.59
  5. Step 5: Solve for x
    x = 33,919,981,979.59/210,103.60
  6. Step 6: Final answer
    x = 161,444.08

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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.