Home / 209,559.48-289,198.40-129,033.47

Finding the Fourth Proportional to 209,559.48, 289,198.40 and 129,033.47

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Solution

The fourth proportional to 209,559.48, 289,198.40 and 129,033.47 is: 178,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,559.48 : 289,198.40 = 129,033.47 : x
  2. Step 2: Convert to fraction form
    209,559.48/289,198.40 = 129,033.47/x
  3. Step 3: Cross multiply
    209,559.48x = 289,198.40 × 129,033.47
  4. Step 4: Simplify right side
    209,559.48x = 37,316,270,979.29
  5. Step 5: Solve for x
    x = 37,316,270,979.29/209,559.48
  6. Step 6: Final answer
    x = 178,070.07

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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.