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Finding the Fourth Proportional to 120,881.76, 181,322.61 and 37,775.76

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Solution

The fourth proportional to 120,881.76, 181,322.61 and 37,775.76 is: 56,663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,881.76 : 181,322.61 = 37,775.76 : x
  2. Step 2: Convert to fraction form
    120,881.76/181,322.61 = 37,775.76/x
  3. Step 3: Cross multiply
    120,881.76x = 181,322.61 × 37,775.76
  4. Step 4: Simplify right side
    120,881.76x = 6,849,599,397.93
  5. Step 5: Solve for x
    x = 6,849,599,397.93/120,881.76
  6. Step 6: Final answer
    x = 56,663.63

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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.