Home / 137,531.95-189,872.63-105,206.92

Finding the Fourth Proportional to 137,531.95, 189,872.63 and 105,206.92

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Solution

The fourth proportional to 137,531.95, 189,872.63 and 105,206.92 is: 145,245.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,531.95 : 189,872.63 = 105,206.92 : x
  2. Step 2: Convert to fraction form
    137,531.95/189,872.63 = 105,206.92/x
  3. Step 3: Cross multiply
    137,531.95x = 189,872.63 × 105,206.92
  4. Step 4: Simplify right side
    137,531.95x = 19,975,914,068.57
  5. Step 5: Solve for x
    x = 19,975,914,068.57/137,531.95
  6. Step 6: Final answer
    x = 145,245.63

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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.