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Finding the Fourth Proportional to 108,688.80, 152,440.80 and 108,688.80

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Solution

The fourth proportional to 108,688.80, 152,440.80 and 108,688.80 is: 152,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,688.80 : 152,440.80 = 108,688.80 : x
  2. Step 2: Convert to fraction form
    108,688.80/152,440.80 = 108,688.80/x
  3. Step 3: Cross multiply
    108,688.80x = 152,440.80 × 108,688.80
  4. Step 4: Simplify right side
    108,688.80x = 16,568,607,623.04
  5. Step 5: Solve for x
    x = 16,568,607,623.04/108,688.80
  6. Step 6: Final answer
    x = 152,440.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.