Home / 103,724.55-143,138.54-57,784.19

Finding the Fourth Proportional to 103,724.55, 143,138.54 and 57,784.19

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Solution

The fourth proportional to 103,724.55, 143,138.54 and 57,784.19 is: 79,741.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,724.55 : 143,138.54 = 57,784.19 : x
  2. Step 2: Convert to fraction form
    103,724.55/143,138.54 = 57,784.19/x
  3. Step 3: Cross multiply
    103,724.55x = 143,138.54 × 57,784.19
  4. Step 4: Simplify right side
    103,724.55x = 8,271,144,020.45
  5. Step 5: Solve for x
    x = 8,271,144,020.45/103,724.55
  6. Step 6: Final answer
    x = 79,741.43

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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.