Home / 103,511.10-142,836.54-58,185.66

Finding the Fourth Proportional to 103,511.10, 142,836.54 and 58,185.66

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Solution

The fourth proportional to 103,511.10, 142,836.54 and 58,185.66 is: 80,291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,511.10 : 142,836.54 = 58,185.66 : x
  2. Step 2: Convert to fraction form
    103,511.10/142,836.54 = 58,185.66/x
  3. Step 3: Cross multiply
    103,511.10x = 142,836.54 × 58,185.66
  4. Step 4: Simplify right side
    103,511.10x = 8,311,038,352.02
  5. Step 5: Solve for x
    x = 8,311,038,352.02/103,511.10
  6. Step 6: Final answer
    x = 80,291.28

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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.