Home / 120,360.47-166,045.21-72,587.27

Finding the Fourth Proportional to 120,360.47, 166,045.21 and 72,587.27

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Solution

The fourth proportional to 120,360.47, 166,045.21 and 72,587.27 is: 100,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,360.47 : 166,045.21 = 72,587.27 : x
  2. Step 2: Convert to fraction form
    120,360.47/166,045.21 = 72,587.27/x
  3. Step 3: Cross multiply
    120,360.47x = 166,045.21 × 72,587.27
  4. Step 4: Simplify right side
    120,360.47x = 12,052,768,724.12
  5. Step 5: Solve for x
    x = 12,052,768,724.12/120,360.47
  6. Step 6: Final answer
    x = 100,138.93

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1.5x scale

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.