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Finding the Fourth Proportional to 103,522.57, 142,866.21 and 58,214.81

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Solution

The fourth proportional to 103,522.57, 142,866.21 and 58,214.81 is: 80,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,522.57 : 142,866.21 = 58,214.81 : x
  2. Step 2: Convert to fraction form
    103,522.57/142,866.21 = 58,214.81/x
  3. Step 3: Cross multiply
    103,522.57x = 142,866.21 × 58,214.81
  4. Step 4: Simplify right side
    103,522.57x = 8,316,929,270.57
  5. Step 5: Solve for x
    x = 8,316,929,270.57/103,522.57
  6. Step 6: Final answer
    x = 80,339.29

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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.