Home / 130,359.20-179,931.36-121,494.56

Finding the Fourth Proportional to 130,359.20, 179,931.36 and 121,494.56

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Solution

The fourth proportional to 130,359.20, 179,931.36 and 121,494.56 is: 167,695.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,359.20 : 179,931.36 = 121,494.56 : x
  2. Step 2: Convert to fraction form
    130,359.20/179,931.36 = 121,494.56/x
  3. Step 3: Cross multiply
    130,359.20x = 179,931.36 × 121,494.56
  4. Step 4: Simplify right side
    130,359.20x = 21,860,681,413.40
  5. Step 5: Solve for x
    x = 21,860,681,413.40/130,359.20
  6. Step 6: Final answer
    x = 167,695.73

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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.