Home / 103,145.16-142,335.94-58,433.16

Finding the Fourth Proportional to 103,145.16, 142,335.94 and 58,433.16

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Solution

The fourth proportional to 103,145.16, 142,335.94 and 58,433.16 is: 80,635.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,145.16 : 142,335.94 = 58,433.16 : x
  2. Step 2: Convert to fraction form
    103,145.16/142,335.94 = 58,433.16/x
  3. Step 3: Cross multiply
    103,145.16x = 142,335.94 × 58,433.16
  4. Step 4: Simplify right side
    103,145.16x = 8,317,138,755.77
  5. Step 5: Solve for x
    x = 8,317,138,755.77/103,145.16
  6. Step 6: Final answer
    x = 80,635.28

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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.