Home / 224,599.05-309,973.19-129,109.77

Finding the Fourth Proportional to 224,599.05, 309,973.19 and 129,109.77

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Solution

The fourth proportional to 224,599.05, 309,973.19 and 129,109.77 is: 178,186.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,599.05 : 309,973.19 = 129,109.77 : x
  2. Step 2: Convert to fraction form
    224,599.05/309,973.19 = 129,109.77/x
  3. Step 3: Cross multiply
    224,599.05x = 309,973.19 × 129,109.77
  4. Step 4: Simplify right side
    224,599.05x = 40,020,566,621.52
  5. Step 5: Solve for x
    x = 40,020,566,621.52/224,599.05
  6. Step 6: Final answer
    x = 178,186.71

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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.