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Finding the Fourth Proportional to 120,703.34, 181,059.88 and 57,490.94

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Solution

The fourth proportional to 120,703.34, 181,059.88 and 57,490.94 is: 86,238.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,703.34 : 181,059.88 = 57,490.94 : x
  2. Step 2: Convert to fraction form
    120,703.34/181,059.88 = 57,490.94/x
  3. Step 3: Cross multiply
    120,703.34x = 181,059.88 × 57,490.94
  4. Step 4: Simplify right side
    120,703.34x = 10,409,302,697.49
  5. Step 5: Solve for x
    x = 10,409,302,697.49/120,703.34
  6. Step 6: Final answer
    x = 86,238.73

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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.