Home / 103,639.60-143,011.56-63,362.80

Finding the Fourth Proportional to 103,639.60, 143,011.56 and 63,362.80

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Solution

The fourth proportional to 103,639.60, 143,011.56 and 63,362.80 is: 87,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.60 : 143,011.56 = 63,362.80 : x
  2. Step 2: Convert to fraction form
    103,639.60/143,011.56 = 63,362.80/x
  3. Step 3: Cross multiply
    103,639.60x = 143,011.56 × 63,362.80
  4. Step 4: Simplify right side
    103,639.60x = 9,061,612,873.97
  5. Step 5: Solve for x
    x = 9,061,612,873.97/103,639.60
  6. Step 6: Final answer
    x = 87,433.89

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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.