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Finding the Fourth Proportional to 103,624.05, 155,436.08 and 101,320.05

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Solution

The fourth proportional to 103,624.05, 155,436.08 and 101,320.05 is: 151,980.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,624.05 : 155,436.08 = 101,320.05 : x
  2. Step 2: Convert to fraction form
    103,624.05/155,436.08 = 101,320.05/x
  3. Step 3: Cross multiply
    103,624.05x = 155,436.08 × 101,320.05
  4. Step 4: Simplify right side
    103,624.05x = 15,748,790,890.80
  5. Step 5: Solve for x
    x = 15,748,790,890.80/103,624.05
  6. Step 6: Final answer
    x = 151,980.08

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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.