Home / 128,528.02-192,725.88-75,323.98

Finding the Fourth Proportional to 128,528.02, 192,725.88 and 75,323.98

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Solution

The fourth proportional to 128,528.02, 192,725.88 and 75,323.98 is: 112,947.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,528.02 : 192,725.88 = 75,323.98 : x
  2. Step 2: Convert to fraction form
    128,528.02/192,725.88 = 75,323.98/x
  3. Step 3: Cross multiply
    128,528.02x = 192,725.88 × 75,323.98
  4. Step 4: Simplify right side
    128,528.02x = 14,516,880,330.60
  5. Step 5: Solve for x
    x = 14,516,880,330.60/128,528.02
  6. Step 6: Final answer
    x = 112,947.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.