Home / 140,307.87-193,688.61-89,390.43

Finding the Fourth Proportional to 140,307.87, 193,688.61 and 89,390.43

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Solution

The fourth proportional to 140,307.87, 193,688.61 and 89,390.43 is: 123,399.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,307.87 : 193,688.61 = 89,390.43 : x
  2. Step 2: Convert to fraction form
    140,307.87/193,688.61 = 89,390.43/x
  3. Step 3: Cross multiply
    140,307.87x = 193,688.61 × 89,390.43
  4. Step 4: Simplify right side
    140,307.87x = 17,313,908,134.00
  5. Step 5: Solve for x
    x = 17,313,908,134.00/140,307.87
  6. Step 6: Final answer
    x = 123,399.41

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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.