Home / 137,134.10-189,256.16-76,718.23

Finding the Fourth Proportional to 137,134.10, 189,256.16 and 76,718.23

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Solution

The fourth proportional to 137,134.10, 189,256.16 and 76,718.23 is: 105,877.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,134.10 : 189,256.16 = 76,718.23 : x
  2. Step 2: Convert to fraction form
    137,134.10/189,256.16 = 76,718.23/x
  3. Step 3: Cross multiply
    137,134.10x = 189,256.16 × 76,718.23
  4. Step 4: Simplify right side
    137,134.10x = 14,519,397,611.80
  5. Step 5: Solve for x
    x = 14,519,397,611.80/137,134.10
  6. Step 6: Final answer
    x = 105,877.37

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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.