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Finding the Fourth Proportional to 112,543.20, 168,814.80 and 45,939.60

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Solution

The fourth proportional to 112,543.20, 168,814.80 and 45,939.60 is: 68,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,543.20 : 168,814.80 = 45,939.60 : x
  2. Step 2: Convert to fraction form
    112,543.20/168,814.80 = 45,939.60/x
  3. Step 3: Cross multiply
    112,543.20x = 168,814.80 × 45,939.60
  4. Step 4: Simplify right side
    112,543.20x = 7,755,284,386.08
  5. Step 5: Solve for x
    x = 7,755,284,386.08/112,543.20
  6. Step 6: Final answer
    x = 68,909.40

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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.