Home / 102,880.57-141,980.69-57,555.84

Finding the Fourth Proportional to 102,880.57, 141,980.69 and 57,555.84

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Solution

The fourth proportional to 102,880.57, 141,980.69 and 57,555.84 is: 79,430.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,880.57 : 141,980.69 = 57,555.84 : x
  2. Step 2: Convert to fraction form
    102,880.57/141,980.69 = 57,555.84/x
  3. Step 3: Cross multiply
    102,880.57x = 141,980.69 × 57,555.84
  4. Step 4: Simplify right side
    102,880.57x = 8,171,817,876.73
  5. Step 5: Solve for x
    x = 8,171,817,876.73/102,880.57
  6. Step 6: Final answer
    x = 79,430.14

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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.