Home / 137,328.25-189,497.03-79,980.11

Finding the Fourth Proportional to 137,328.25, 189,497.03 and 79,980.11

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Solution

The fourth proportional to 137,328.25, 189,497.03 and 79,980.11 is: 110,363.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,328.25 : 189,497.03 = 79,980.11 : x
  2. Step 2: Convert to fraction form
    137,328.25/189,497.03 = 79,980.11/x
  3. Step 3: Cross multiply
    137,328.25x = 189,497.03 × 79,980.11
  4. Step 4: Simplify right side
    137,328.25x = 15,155,993,304.07
  5. Step 5: Solve for x
    x = 15,155,993,304.07/137,328.25
  6. Step 6: Final answer
    x = 110,363.26

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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.