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Finding the Fourth Proportional to 118,447.92, 163,408.86 and 77,600.40

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Solution

The fourth proportional to 118,447.92, 163,408.86 and 77,600.40 is: 107,056.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,447.92 : 163,408.86 = 77,600.40 : x
  2. Step 2: Convert to fraction form
    118,447.92/163,408.86 = 77,600.40/x
  3. Step 3: Cross multiply
    118,447.92x = 163,408.86 × 77,600.40
  4. Step 4: Simplify right side
    118,447.92x = 12,680,592,899.54
  5. Step 5: Solve for x
    x = 12,680,592,899.54/118,447.92
  6. Step 6: Final answer
    x = 107,056.27

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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.