Home / 128,011.11-191,957.22-74,718.47

Finding the Fourth Proportional to 128,011.11, 191,957.22 and 74,718.47

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Solution

The fourth proportional to 128,011.11, 191,957.22 and 74,718.47 is: 112,043.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011.11 : 191,957.22 = 74,718.47 : x
  2. Step 2: Convert to fraction form
    128,011.11/191,957.22 = 74,718.47/x
  3. Step 3: Cross multiply
    128,011.11x = 191,957.22 × 74,718.47
  4. Step 4: Simplify right side
    128,011.11x = 14,342,749,783.85
  5. Step 5: Solve for x
    x = 14,342,749,783.85/128,011.11
  6. Step 6: Final answer
    x = 112,043.01

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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.