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Finding the Fourth Proportional to 103,530.41, 155,141.41 and 53,543.76

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Solution

The fourth proportional to 103,530.41, 155,141.41 and 53,543.76 is: 80,235.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,530.41 : 155,141.41 = 53,543.76 : x
  2. Step 2: Convert to fraction form
    103,530.41/155,141.41 = 53,543.76/x
  3. Step 3: Cross multiply
    103,530.41x = 155,141.41 × 53,543.76
  4. Step 4: Simplify right side
    103,530.41x = 8,306,854,423.10
  5. Step 5: Solve for x
    x = 8,306,854,423.10/103,530.41
  6. Step 6: Final answer
    x = 80,235.89

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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.