Home / 115,963.09-160,031.61-64,979.65

Finding the Fourth Proportional to 115,963.09, 160,031.61 and 64,979.65

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Solution

The fourth proportional to 115,963.09, 160,031.61 and 64,979.65 is: 89,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,963.09 : 160,031.61 = 64,979.65 : x
  2. Step 2: Convert to fraction form
    115,963.09/160,031.61 = 64,979.65/x
  3. Step 3: Cross multiply
    115,963.09x = 160,031.61 × 64,979.65
  4. Step 4: Simplify right side
    115,963.09x = 10,398,798,006.74
  5. Step 5: Solve for x
    x = 10,398,798,006.74/115,963.09
  6. Step 6: Final answer
    x = 89,673.34

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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.