Home / 103,147.16-142,338.70-58,435.16

Finding the Fourth Proportional to 103,147.16, 142,338.70 and 58,435.16

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Solution

The fourth proportional to 103,147.16, 142,338.70 and 58,435.16 is: 80,638.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,147.16 : 142,338.70 = 58,435.16 : x
  2. Step 2: Convert to fraction form
    103,147.16/142,338.70 = 58,435.16/x
  3. Step 3: Cross multiply
    103,147.16x = 142,338.70 × 58,435.16
  4. Step 4: Simplify right side
    103,147.16x = 8,317,584,708.69
  5. Step 5: Solve for x
    x = 8,317,584,708.69/103,147.16
  6. Step 6: Final answer
    x = 80,638.04

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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.