Home / 128,176.16-192,303.11-90,808.53

Finding the Fourth Proportional to 128,176.16, 192,303.11 and 90,808.53

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Solution

The fourth proportional to 128,176.16, 192,303.11 and 90,808.53 is: 136,240.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,176.16 : 192,303.11 = 90,808.53 : x
  2. Step 2: Convert to fraction form
    128,176.16/192,303.11 = 90,808.53/x
  3. Step 3: Cross multiply
    128,176.16x = 192,303.11 × 90,808.53
  4. Step 4: Simplify right side
    128,176.16x = 17,462,762,239.41
  5. Step 5: Solve for x
    x = 17,462,762,239.41/128,176.16
  6. Step 6: Final answer
    x = 136,240.33

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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.