Home / 128,099.87-176,777.79-71,511.24

Finding the Fourth Proportional to 128,099.87, 176,777.79 and 71,511.24

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Solution

The fourth proportional to 128,099.87, 176,777.79 and 71,511.24 is: 98,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,099.87 : 176,777.79 = 71,511.24 : x
  2. Step 2: Convert to fraction form
    128,099.87/176,777.79 = 71,511.24/x
  3. Step 3: Cross multiply
    128,099.87x = 176,777.79 × 71,511.24
  4. Step 4: Simplify right side
    128,099.87x = 12,641,598,967.36
  5. Step 5: Solve for x
    x = 12,641,598,967.36/128,099.87
  6. Step 6: Final answer
    x = 98,685.50

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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.