Home / 131,482.14-181,532.85-77,784.36

Finding the Fourth Proportional to 131,482.14, 181,532.85 and 77,784.36

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Solution

The fourth proportional to 131,482.14, 181,532.85 and 77,784.36 is: 107,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,482.14 : 181,532.85 = 77,784.36 : x
  2. Step 2: Convert to fraction form
    131,482.14/181,532.85 = 77,784.36/x
  3. Step 3: Cross multiply
    131,482.14x = 181,532.85 × 77,784.36
  4. Step 4: Simplify right side
    131,482.14x = 14,120,416,556.23
  5. Step 5: Solve for x
    x = 14,120,416,556.23/131,482.14
  6. Step 6: Final answer
    x = 107,394.18

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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.