Home / 213,080.09-319,585.25-86,715.23

Finding the Fourth Proportional to 213,080.09, 319,585.25 and 86,715.23

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Solution

The fourth proportional to 213,080.09, 319,585.25 and 86,715.23 is: 130,058.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,080.09 : 319,585.25 = 86,715.23 : x
  2. Step 2: Convert to fraction form
    213,080.09/319,585.25 = 86,715.23/x
  3. Step 3: Cross multiply
    213,080.09x = 319,585.25 × 86,715.23
  4. Step 4: Simplify right side
    213,080.09x = 27,712,908,458.36
  5. Step 5: Solve for x
    x = 27,712,908,458.36/213,080.09
  6. Step 6: Final answer
    x = 130,058.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.