Home / 128,934.93-193,402.13-72,749.55

Finding the Fourth Proportional to 128,934.93, 193,402.13 and 72,749.55

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Solution

The fourth proportional to 128,934.93, 193,402.13 and 72,749.55 is: 109,124.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,934.93 : 193,402.13 = 72,749.55 : x
  2. Step 2: Convert to fraction form
    128,934.93/193,402.13 = 72,749.55/x
  3. Step 3: Cross multiply
    128,934.93x = 193,402.13 × 72,749.55
  4. Step 4: Simplify right side
    128,934.93x = 14,069,917,562.79
  5. Step 5: Solve for x
    x = 14,069,917,562.79/128,934.93
  6. Step 6: Final answer
    x = 109,124.17

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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.