Home / 209,934.30-314,901.45-121,142.10

Finding the Fourth Proportional to 209,934.30, 314,901.45 and 121,142.10

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Solution

The fourth proportional to 209,934.30, 314,901.45 and 121,142.10 is: 181,713.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,934.30 : 314,901.45 = 121,142.10 : x
  2. Step 2: Convert to fraction form
    209,934.30/314,901.45 = 121,142.10/x
  3. Step 3: Cross multiply
    209,934.30x = 314,901.45 × 121,142.10
  4. Step 4: Simplify right side
    209,934.30x = 38,147,822,946.05
  5. Step 5: Solve for x
    x = 38,147,822,946.05/209,934.30
  6. Step 6: Final answer
    x = 181,713.15

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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.