Home / 130,031.64-179,413.20-76,313.88

Finding the Fourth Proportional to 130,031.64, 179,413.20 and 76,313.88

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Solution

The fourth proportional to 130,031.64, 179,413.20 and 76,313.88 is: 105,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,031.64 : 179,413.20 = 76,313.88 : x
  2. Step 2: Convert to fraction form
    130,031.64/179,413.20 = 76,313.88/x
  3. Step 3: Cross multiply
    130,031.64x = 179,413.20 × 76,313.88
  4. Step 4: Simplify right side
    130,031.64x = 13,691,717,415.22
  5. Step 5: Solve for x
    x = 13,691,717,415.22/130,031.64
  6. Step 6: Final answer
    x = 105,295.28

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1.5x scale

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.