Home / 209,166.72-288,543.80-136,612.12

Finding the Fourth Proportional to 209,166.72, 288,543.80 and 136,612.12

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Solution

The fourth proportional to 209,166.72, 288,543.80 and 136,612.12 is: 188,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,166.72 : 288,543.80 = 136,612.12 : x
  2. Step 2: Convert to fraction form
    209,166.72/288,543.80 = 136,612.12/x
  3. Step 3: Cross multiply
    209,166.72x = 288,543.80 × 136,612.12
  4. Step 4: Simplify right side
    209,166.72x = 39,418,578,788.14
  5. Step 5: Solve for x
    x = 39,418,578,788.14/209,166.72
  6. Step 6: Final answer
    x = 188,455.31

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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.