Home / 128,387.03-192,626.10-57,303.18

Finding the Fourth Proportional to 128,387.03, 192,626.10 and 57,303.18

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Solution

The fourth proportional to 128,387.03, 192,626.10 and 57,303.18 is: 85,975.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,387.03 : 192,626.10 = 57,303.18 : x
  2. Step 2: Convert to fraction form
    128,387.03/192,626.10 = 57,303.18/x
  3. Step 3: Cross multiply
    128,387.03x = 192,626.10 × 57,303.18
  4. Step 4: Simplify right side
    128,387.03x = 11,038,088,081.00
  5. Step 5: Solve for x
    x = 11,038,088,081.00/128,387.03
  6. Step 6: Final answer
    x = 85,975.11

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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.