Home / 103,912.80-143,365.28-58,585.12

Finding the Fourth Proportional to 103,912.80, 143,365.28 and 58,585.12

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Solution

The fourth proportional to 103,912.80, 143,365.28 and 58,585.12 is: 80,828.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,912.80 : 143,365.28 = 58,585.12 : x
  2. Step 2: Convert to fraction form
    103,912.80/143,365.28 = 58,585.12/x
  3. Step 3: Cross multiply
    103,912.80x = 143,365.28 × 58,585.12
  4. Step 4: Simplify right side
    103,912.80x = 8,399,072,132.63
  5. Step 5: Solve for x
    x = 8,399,072,132.63/103,912.80
  6. Step 6: Final answer
    x = 80,828.08

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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.