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Finding the Fourth Proportional to 130,649.95, 195,479.43 and 77,370.53

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Solution

The fourth proportional to 130,649.95, 195,479.43 and 77,370.53 is: 115,762.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,649.95 : 195,479.43 = 77,370.53 : x
  2. Step 2: Convert to fraction form
    130,649.95/195,479.43 = 77,370.53/x
  3. Step 3: Cross multiply
    130,649.95x = 195,479.43 × 77,370.53
  4. Step 4: Simplify right side
    130,649.95x = 15,124,347,103.20
  5. Step 5: Solve for x
    x = 15,124,347,103.20/130,649.95
  6. Step 6: Final answer
    x = 115,762.36

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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.