Home / 128,543.14-192,777.45-49,639.42

Finding the Fourth Proportional to 128,543.14, 192,777.45 and 49,639.42

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Solution

The fourth proportional to 128,543.14, 192,777.45 and 49,639.42 is: 74,444.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,543.14 : 192,777.45 = 49,639.42 : x
  2. Step 2: Convert to fraction form
    128,543.14/192,777.45 = 49,639.42/x
  3. Step 3: Cross multiply
    128,543.14x = 192,777.45 × 49,639.42
  4. Step 4: Simplify right side
    128,543.14x = 9,569,360,807.08
  5. Step 5: Solve for x
    x = 9,569,360,807.08/128,543.14
  6. Step 6: Final answer
    x = 74,444.74

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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.