Home / 155,001.72-213,876.88-91,330.86

Finding the Fourth Proportional to 155,001.72, 213,876.88 and 91,330.86

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Solution

The fourth proportional to 155,001.72, 213,876.88 and 91,330.86 is: 126,021.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,001.72 : 213,876.88 = 91,330.86 : x
  2. Step 2: Convert to fraction form
    155,001.72/213,876.88 = 91,330.86/x
  3. Step 3: Cross multiply
    155,001.72x = 213,876.88 × 91,330.86
  4. Step 4: Simplify right side
    155,001.72x = 19,533,559,384.52
  5. Step 5: Solve for x
    x = 19,533,559,384.52/155,001.72
  6. Step 6: Final answer
    x = 126,021.57

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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.