Home / 128,039.86-176,704.79-70,690.24

Finding the Fourth Proportional to 128,039.86, 176,704.79 and 70,690.24

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Solution

The fourth proportional to 128,039.86, 176,704.79 and 70,690.24 is: 97,557.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,039.86 : 176,704.79 = 70,690.24 : x
  2. Step 2: Convert to fraction form
    128,039.86/176,704.79 = 70,690.24/x
  3. Step 3: Cross multiply
    128,039.86x = 176,704.79 × 70,690.24
  4. Step 4: Simplify right side
    128,039.86x = 12,491,303,285.35
  5. Step 5: Solve for x
    x = 12,491,303,285.35/128,039.86
  6. Step 6: Final answer
    x = 97,557.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.