Home / 130,989.96-180,788.02-77,288.28

Finding the Fourth Proportional to 130,989.96, 180,788.02 and 77,288.28

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Solution

The fourth proportional to 130,989.96, 180,788.02 and 77,288.28 is: 106,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,989.96 : 180,788.02 = 77,288.28 : x
  2. Step 2: Convert to fraction form
    130,989.96/180,788.02 = 77,288.28/x
  3. Step 3: Cross multiply
    130,989.96x = 180,788.02 × 77,288.28
  4. Step 4: Simplify right side
    130,989.96x = 13,972,795,110.41
  5. Step 5: Solve for x
    x = 13,972,795,110.41/130,989.96
  6. Step 6: Final answer
    x = 106,670.73

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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.