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Finding the Fourth Proportional to 112,114.40, 168,236.40 and 42,000.80

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Solution

The fourth proportional to 112,114.40, 168,236.40 and 42,000.80 is: 63,025.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,114.40 : 168,236.40 = 42,000.80 : x
  2. Step 2: Convert to fraction form
    112,114.40/168,236.40 = 42,000.80/x
  3. Step 3: Cross multiply
    112,114.40x = 168,236.40 × 42,000.80
  4. Step 4: Simplify right side
    112,114.40x = 7,066,063,389.12
  5. Step 5: Solve for x
    x = 7,066,063,389.12/112,114.40
  6. Step 6: Final answer
    x = 63,025.48

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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.