Home / 130,497.10-180,077.47-76,771.73

Finding the Fourth Proportional to 130,497.10, 180,077.47 and 76,771.73

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Solution

The fourth proportional to 130,497.10, 180,077.47 and 76,771.73 is: 105,939.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,497.10 : 180,077.47 = 76,771.73 : x
  2. Step 2: Convert to fraction form
    130,497.10/180,077.47 = 76,771.73/x
  3. Step 3: Cross multiply
    130,497.10x = 180,077.47 × 76,771.73
  4. Step 4: Simplify right side
    130,497.10x = 13,824,859,356.12
  5. Step 5: Solve for x
    x = 13,824,859,356.12/130,497.10
  6. Step 6: Final answer
    x = 105,939.98

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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.