Home / 103,605.64-142,976.36-61,185.12

Finding the Fourth Proportional to 103,605.64, 142,976.36 and 61,185.12

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Solution

The fourth proportional to 103,605.64, 142,976.36 and 61,185.12 is: 84,435.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,605.64 : 142,976.36 = 61,185.12 : x
  2. Step 2: Convert to fraction form
    103,605.64/142,976.36 = 61,185.12/x
  3. Step 3: Cross multiply
    103,605.64x = 142,976.36 × 61,185.12
  4. Step 4: Simplify right side
    103,605.64x = 8,748,025,743.76
  5. Step 5: Solve for x
    x = 8,748,025,743.76/103,605.64
  6. Step 6: Final answer
    x = 84,435.81

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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.