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Finding the Fourth Proportional to 121,010.52, 181,515.78 and 37,911

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Solution

The fourth proportional to 121,010.52, 181,515.78 and 37,911 is: 56,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.52 : 181,515.78 = 37,911 : x
  2. Step 2: Convert to fraction form
    121,010.52/181,515.78 = 37,911/x
  3. Step 3: Cross multiply
    121,010.52x = 181,515.78 × 37,911
  4. Step 4: Simplify right side
    121,010.52x = 6,881,444,735.58
  5. Step 5: Solve for x
    x = 6,881,444,735.58/121,010.52
  6. Step 6: Final answer
    x = 56,866.50

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1.5x scale

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.