Home / 128,924.24-193,463.04-69,758.72

Finding the Fourth Proportional to 128,924.24, 193,463.04 and 69,758.72

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Solution

The fourth proportional to 128,924.24, 193,463.04 and 69,758.72 is: 104,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,924.24 : 193,463.04 = 69,758.72 : x
  2. Step 2: Convert to fraction form
    128,924.24/193,463.04 = 69,758.72/x
  3. Step 3: Cross multiply
    128,924.24x = 193,463.04 × 69,758.72
  4. Step 4: Simplify right side
    128,924.24x = 13,495,734,037.71
  5. Step 5: Solve for x
    x = 13,495,734,037.71/128,924.24
  6. Step 6: Final answer
    x = 104,679.57

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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.