Home / 130,139.51-179,611.79-82,397.30

Finding the Fourth Proportional to 130,139.51, 179,611.79 and 82,397.30

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Solution

The fourth proportional to 130,139.51, 179,611.79 and 82,397.30 is: 113,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,139.51 : 179,611.79 = 82,397.30 : x
  2. Step 2: Convert to fraction form
    130,139.51/179,611.79 = 82,397.30/x
  3. Step 3: Cross multiply
    130,139.51x = 179,611.79 × 82,397.30
  4. Step 4: Simplify right side
    130,139.51x = 14,799,525,234.12
  5. Step 5: Solve for x
    x = 14,799,525,234.12/130,139.51
  6. Step 6: Final answer
    x = 113,720.47

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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.