Home / 157,769.47-217,719.09-89,785.01

Finding the Fourth Proportional to 157,769.47, 217,719.09 and 89,785.01

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Solution

The fourth proportional to 157,769.47, 217,719.09 and 89,785.01 is: 123,901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,769.47 : 217,719.09 = 89,785.01 : x
  2. Step 2: Convert to fraction form
    157,769.47/217,719.09 = 89,785.01/x
  3. Step 3: Cross multiply
    157,769.47x = 217,719.09 × 89,785.01
  4. Step 4: Simplify right side
    157,769.47x = 19,547,909,992.47
  5. Step 5: Solve for x
    x = 19,547,909,992.47/157,769.47
  6. Step 6: Final answer
    x = 123,901.73

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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.