Home / 128,322.52-192,516.58-53,417.76

Finding the Fourth Proportional to 128,322.52, 192,516.58 and 53,417.76

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Solution

The fourth proportional to 128,322.52, 192,516.58 and 53,417.76 is: 80,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,322.52 : 192,516.58 = 53,417.76 : x
  2. Step 2: Convert to fraction form
    128,322.52/192,516.58 = 53,417.76/x
  3. Step 3: Cross multiply
    128,322.52x = 192,516.58 × 53,417.76
  4. Step 4: Simplify right side
    128,322.52x = 10,283,804,466.46
  5. Step 5: Solve for x
    x = 10,283,804,466.46/128,322.52
  6. Step 6: Final answer
    x = 80,140.29

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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.