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Finding the Fourth Proportional to 103,303.57, 155,038.38 and 53,398.29

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Solution

The fourth proportional to 103,303.57, 155,038.38 and 53,398.29 is: 80,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,303.57 : 155,038.38 = 53,398.29 : x
  2. Step 2: Convert to fraction form
    103,303.57/155,038.38 = 53,398.29/x
  3. Step 3: Cross multiply
    103,303.57x = 155,038.38 × 53,398.29
  4. Step 4: Simplify right side
    103,303.57x = 8,278,784,376.37
  5. Step 5: Solve for x
    x = 8,278,784,376.37/103,303.57
  6. Step 6: Final answer
    x = 80,140.35

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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.