Home / 130,497.85-180,078.51-76,772.49

Finding the Fourth Proportional to 130,497.85, 180,078.51 and 76,772.49

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Solution

The fourth proportional to 130,497.85, 180,078.51 and 76,772.49 is: 105,941.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,497.85 : 180,078.51 = 76,772.49 : x
  2. Step 2: Convert to fraction form
    130,497.85/180,078.51 = 76,772.49/x
  3. Step 3: Cross multiply
    130,497.85x = 180,078.51 × 76,772.49
  4. Step 4: Simplify right side
    130,497.85x = 13,825,074,323.93
  5. Step 5: Solve for x
    x = 13,825,074,323.93/130,497.85
  6. Step 6: Final answer
    x = 105,941.01

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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.