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Finding the Fourth Proportional to 120,989.58, 181,326.69 and 61,775.34

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Solution

The fourth proportional to 120,989.58, 181,326.69 and 61,775.34 is: 92,582.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,989.58 : 181,326.69 = 61,775.34 : x
  2. Step 2: Convert to fraction form
    120,989.58/181,326.69 = 61,775.34/x
  3. Step 3: Cross multiply
    120,989.58x = 181,326.69 × 61,775.34
  4. Step 4: Simplify right side
    120,989.58x = 11,201,517,925.82
  5. Step 5: Solve for x
    x = 11,201,517,925.82/120,989.58
  6. Step 6: Final answer
    x = 92,582.50

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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.