Home / 209,001.63-288,384.80-124,139.55

Finding the Fourth Proportional to 209,001.63, 288,384.80 and 124,139.55

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Solution

The fourth proportional to 209,001.63, 288,384.80 and 124,139.55 is: 171,290.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,001.63 : 288,384.80 = 124,139.55 : x
  2. Step 2: Convert to fraction form
    209,001.63/288,384.80 = 124,139.55/x
  3. Step 3: Cross multiply
    209,001.63x = 288,384.80 × 124,139.55
  4. Step 4: Simplify right side
    209,001.63x = 35,799,958,678.14
  5. Step 5: Solve for x
    x = 35,799,958,678.14/209,001.63
  6. Step 6: Final answer
    x = 171,290.33

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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.