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Finding the Fourth Proportional to 118,368.60, 163,310.76 and 84,383.16

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Solution

The fourth proportional to 118,368.60, 163,310.76 and 84,383.16 is: 116,421.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,368.60 : 163,310.76 = 84,383.16 : x
  2. Step 2: Convert to fraction form
    118,368.60/163,310.76 = 84,383.16/x
  3. Step 3: Cross multiply
    118,368.60x = 163,310.76 × 84,383.16
  4. Step 4: Simplify right side
    118,368.60x = 13,780,677,990.80
  5. Step 5: Solve for x
    x = 13,780,677,990.80/118,368.60
  6. Step 6: Final answer
    x = 116,421.74

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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.