Home / 128,376.28-177,099.57-83,068.89

Finding the Fourth Proportional to 128,376.28, 177,099.57 and 83,068.89

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Solution

The fourth proportional to 128,376.28, 177,099.57 and 83,068.89 is: 114,596.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,376.28 : 177,099.57 = 83,068.89 : x
  2. Step 2: Convert to fraction form
    128,376.28/177,099.57 = 83,068.89/x
  3. Step 3: Cross multiply
    128,376.28x = 177,099.57 × 83,068.89
  4. Step 4: Simplify right side
    128,376.28x = 14,711,465,265.07
  5. Step 5: Solve for x
    x = 14,711,465,265.07/128,376.28
  6. Step 6: Final answer
    x = 114,596.44

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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.