Home / 128,601.14-193,197.35-90,737.55

Finding the Fourth Proportional to 128,601.14, 193,197.35 and 90,737.55

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Solution

The fourth proportional to 128,601.14, 193,197.35 and 90,737.55 is: 136,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601.14 : 193,197.35 = 90,737.55 : x
  2. Step 2: Convert to fraction form
    128,601.14/193,197.35 = 90,737.55/x
  3. Step 3: Cross multiply
    128,601.14x = 193,197.35 × 90,737.55
  4. Step 4: Simplify right side
    128,601.14x = 17,530,254,432.34
  5. Step 5: Solve for x
    x = 17,530,254,432.34/128,601.14
  6. Step 6: Final answer
    x = 136,314.93

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1.5x scale

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.