Home / 102,880.06-141,980-57,555.34

Finding the Fourth Proportional to 102,880.06, 141,980 and 57,555.34

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Solution

The fourth proportional to 102,880.06, 141,980 and 57,555.34 is: 79,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,880.06 : 141,980 = 57,555.34 : x
  2. Step 2: Convert to fraction form
    102,880.06/141,980 = 57,555.34/x
  3. Step 3: Cross multiply
    102,880.06x = 141,980 × 57,555.34
  4. Step 4: Simplify right side
    102,880.06x = 8,171,707,173.20
  5. Step 5: Solve for x
    x = 8,171,707,173.20/102,880.06
  6. Step 6: Final answer
    x = 79,429.45

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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.