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Finding the Fourth Proportional to 103,753.81, 143,185.59 and 63,454.93

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Solution

The fourth proportional to 103,753.81, 143,185.59 and 63,454.93 is: 87,571.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,753.81 : 143,185.59 = 63,454.93 : x
  2. Step 2: Convert to fraction form
    103,753.81/143,185.59 = 63,454.93/x
  3. Step 3: Cross multiply
    103,753.81x = 143,185.59 × 63,454.93
  4. Step 4: Simplify right side
    103,753.81x = 9,085,831,232.49
  5. Step 5: Solve for x
    x = 9,085,831,232.49/103,753.81
  6. Step 6: Final answer
    x = 87,571.06

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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.