Home / 104,280-143,905.55-56,532.12

Finding the Fourth Proportional to 104,280, 143,905.55 and 56,532.12

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Solution

The fourth proportional to 104,280, 143,905.55 and 56,532.12 is: 78,013.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,280 : 143,905.55 = 56,532.12 : x
  2. Step 2: Convert to fraction form
    104,280/143,905.55 = 56,532.12/x
  3. Step 3: Cross multiply
    104,280x = 143,905.55 × 56,532.12
  4. Step 4: Simplify right side
    104,280x = 8,135,285,538.61
  5. Step 5: Solve for x
    x = 8,135,285,538.61/104,280
  6. Step 6: Final answer
    x = 78,013.86

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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.