Home / 103,605.68-142,988.56-58,285.64

Finding the Fourth Proportional to 103,605.68, 142,988.56 and 58,285.64

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Solution

The fourth proportional to 103,605.68, 142,988.56 and 58,285.64 is: 80,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,605.68 : 142,988.56 = 58,285.64 : x
  2. Step 2: Convert to fraction form
    103,605.68/142,988.56 = 58,285.64/x
  3. Step 3: Cross multiply
    103,605.68x = 142,988.56 × 58,285.64
  4. Step 4: Simplify right side
    103,605.68x = 8,334,179,732.28
  5. Step 5: Solve for x
    x = 8,334,179,732.28/103,605.68
  6. Step 6: Final answer
    x = 80,441.34

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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.