Home / 120,407.16-166,163.08-72,651.30

Finding the Fourth Proportional to 120,407.16, 166,163.08 and 72,651.30

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Solution

The fourth proportional to 120,407.16, 166,163.08 and 72,651.30 is: 100,259.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,407.16 : 166,163.08 = 72,651.30 : x
  2. Step 2: Convert to fraction form
    120,407.16/166,163.08 = 72,651.30/x
  3. Step 3: Cross multiply
    120,407.16x = 166,163.08 × 72,651.30
  4. Step 4: Simplify right side
    120,407.16x = 12,071,963,774.00
  5. Step 5: Solve for x
    x = 12,071,963,774.00/120,407.16
  6. Step 6: Final answer
    x = 100,259.52

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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.