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Finding the Fourth Proportional to 103,582.76, 155,124.90 and 70,201.54

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Solution

The fourth proportional to 103,582.76, 155,124.90 and 70,201.54 is: 105,133.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,582.76 : 155,124.90 = 70,201.54 : x
  2. Step 2: Convert to fraction form
    103,582.76/155,124.90 = 70,201.54/x
  3. Step 3: Cross multiply
    103,582.76x = 155,124.90 × 70,201.54
  4. Step 4: Simplify right side
    103,582.76x = 10,890,006,872.35
  5. Step 5: Solve for x
    x = 10,890,006,872.35/103,582.76
  6. Step 6: Final answer
    x = 105,133.40

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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.