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Finding the Fourth Proportional to 128,118.03, 192,294.60 and 64,982.08

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Solution

The fourth proportional to 128,118.03, 192,294.60 and 64,982.08 is: 97,532.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,118.03 : 192,294.60 = 64,982.08 : x
  2. Step 2: Convert to fraction form
    128,118.03/192,294.60 = 64,982.08/x
  3. Step 3: Cross multiply
    128,118.03x = 192,294.60 × 64,982.08
  4. Step 4: Simplify right side
    128,118.03x = 12,495,703,080.77
  5. Step 5: Solve for x
    x = 12,495,703,080.77/128,118.03
  6. Step 6: Final answer
    x = 97,532.74

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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.