Home / 130,672.68-195,762.30-77,205.12

Finding the Fourth Proportional to 130,672.68, 195,762.30 and 77,205.12

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Solution

The fourth proportional to 130,672.68, 195,762.30 and 77,205.12 is: 115,661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,672.68 : 195,762.30 = 77,205.12 : x
  2. Step 2: Convert to fraction form
    130,672.68/195,762.30 = 77,205.12/x
  3. Step 3: Cross multiply
    130,672.68x = 195,762.30 × 77,205.12
  4. Step 4: Simplify right side
    130,672.68x = 15,113,851,862.98
  5. Step 5: Solve for x
    x = 15,113,851,862.98/130,672.68
  6. Step 6: Final answer
    x = 115,661.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.