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Finding the Fourth Proportional to 96,000.40, 144,000.60 and 85,632.40

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Solution

The fourth proportional to 96,000.40, 144,000.60 and 85,632.40 is: 128,448.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,000.40 : 144,000.60 = 85,632.40 : x
  2. Step 2: Convert to fraction form
    96,000.40/144,000.60 = 85,632.40/x
  3. Step 3: Cross multiply
    96,000.40x = 144,000.60 × 85,632.40
  4. Step 4: Simplify right side
    96,000.40x = 12,331,116,979.44
  5. Step 5: Solve for x
    x = 12,331,116,979.44/96,000.40
  6. Step 6: Final answer
    x = 128,448.60

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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.