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Finding the Fourth Proportional to 103,802.56, 143,258.12 and 63,542.92

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Solution

The fourth proportional to 103,802.56, 143,258.12 and 63,542.92 is: 87,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,802.56 : 143,258.12 = 63,542.92 : x
  2. Step 2: Convert to fraction form
    103,802.56/143,258.12 = 63,542.92/x
  3. Step 3: Cross multiply
    103,802.56x = 143,258.12 × 63,542.92
  4. Step 4: Simplify right side
    103,802.56x = 9,103,039,258.51
  5. Step 5: Solve for x
    x = 9,103,039,258.51/103,802.56
  6. Step 6: Final answer
    x = 87,695.71

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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.