Home / 137,148.28-189,280.31-76,734.23

Finding the Fourth Proportional to 137,148.28, 189,280.31 and 76,734.23

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Solution

The fourth proportional to 137,148.28, 189,280.31 and 76,734.23 is: 105,902.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,148.28 : 189,280.31 = 76,734.23 : x
  2. Step 2: Convert to fraction form
    137,148.28/189,280.31 = 76,734.23/x
  3. Step 3: Cross multiply
    137,148.28x = 189,280.31 × 76,734.23
  4. Step 4: Simplify right side
    137,148.28x = 14,524,277,511.94
  5. Step 5: Solve for x
    x = 14,524,277,511.94/137,148.28
  6. Step 6: Final answer
    x = 105,902.00

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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.