Home / 387,551.01-581,012.85-121,174.41

Finding the Fourth Proportional to 387,551.01, 581,012.85 and 121,174.41

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Solution

The fourth proportional to 387,551.01, 581,012.85 and 121,174.41 is: 181,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,551.01 : 581,012.85 = 121,174.41 : x
  2. Step 2: Convert to fraction form
    387,551.01/581,012.85 = 121,174.41/x
  3. Step 3: Cross multiply
    387,551.01x = 581,012.85 × 121,174.41
  4. Step 4: Simplify right side
    387,551.01x = 70,403,889,301.17
  5. Step 5: Solve for x
    x = 70,403,889,301.17/387,551.01
  6. Step 6: Final answer
    x = 181,663.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.