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Finding the Fourth Proportional to 174,013.60, 261,020.40 and 85,440.10

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Solution

The fourth proportional to 174,013.60, 261,020.40 and 85,440.10 is: 128,160.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,013.60 : 261,020.40 = 85,440.10 : x
  2. Step 2: Convert to fraction form
    174,013.60/261,020.40 = 85,440.10/x
  3. Step 3: Cross multiply
    174,013.60x = 261,020.40 × 85,440.10
  4. Step 4: Simplify right side
    174,013.60x = 22,301,609,078.04
  5. Step 5: Solve for x
    x = 22,301,609,078.04/174,013.60
  6. Step 6: Final answer
    x = 128,160.15

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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.