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Finding the Fourth Proportional to 153,543.68, 211,890.72 and 89,025.44

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Solution

The fourth proportional to 153,543.68, 211,890.72 and 89,025.44 is: 122,855.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,543.68 : 211,890.72 = 89,025.44 : x
  2. Step 2: Convert to fraction form
    153,543.68/211,890.72 = 89,025.44/x
  3. Step 3: Cross multiply
    153,543.68x = 211,890.72 × 89,025.44
  4. Step 4: Simplify right side
    153,543.68x = 18,863,664,579.92
  5. Step 5: Solve for x
    x = 18,863,664,579.92/153,543.68
  6. Step 6: Final answer
    x = 122,855.36

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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.