Home / 181,005.59-249,783.89-100,431.38

Finding the Fourth Proportional to 181,005.59, 249,783.89 and 100,431.38

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Solution

The fourth proportional to 181,005.59, 249,783.89 and 100,431.38 is: 138,593.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,005.59 : 249,783.89 = 100,431.38 : x
  2. Step 2: Convert to fraction form
    181,005.59/249,783.89 = 100,431.38/x
  3. Step 3: Cross multiply
    181,005.59x = 249,783.89 × 100,431.38
  4. Step 4: Simplify right side
    181,005.59x = 25,086,140,896.77
  5. Step 5: Solve for x
    x = 25,086,140,896.77/181,005.59
  6. Step 6: Final answer
    x = 138,593.18

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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.