Home / 102,750.39-141,792.75-57,428.73

Finding the Fourth Proportional to 102,750.39, 141,792.75 and 57,428.73

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Solution

The fourth proportional to 102,750.39, 141,792.75 and 57,428.73 is: 79,250.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,750.39 : 141,792.75 = 57,428.73 : x
  2. Step 2: Convert to fraction form
    102,750.39/141,792.75 = 57,428.73/x
  3. Step 3: Cross multiply
    102,750.39x = 141,792.75 × 57,428.73
  4. Step 4: Simplify right side
    102,750.39x = 8,142,977,555.71
  5. Step 5: Solve for x
    x = 8,142,977,555.71/102,750.39
  6. Step 6: Final answer
    x = 79,250.09

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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.