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Finding the Fourth Proportional to 112,178.88, 168,268.32 and 45,655.20

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Solution

The fourth proportional to 112,178.88, 168,268.32 and 45,655.20 is: 68,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,178.88 : 168,268.32 = 45,655.20 : x
  2. Step 2: Convert to fraction form
    112,178.88/168,268.32 = 45,655.20/x
  3. Step 3: Cross multiply
    112,178.88x = 168,268.32 × 45,655.20
  4. Step 4: Simplify right side
    112,178.88x = 7,682,323,803.26
  5. Step 5: Solve for x
    x = 7,682,323,803.26/112,178.88
  6. Step 6: Final answer
    x = 68,482.80

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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.