Home / 219,976.80-329,831.55-86,703.45

Finding the Fourth Proportional to 219,976.80, 329,831.55 and 86,703.45

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Solution

The fourth proportional to 219,976.80, 329,831.55 and 86,703.45 is: 130,002.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,976.80 : 329,831.55 = 86,703.45 : x
  2. Step 2: Convert to fraction form
    219,976.80/329,831.55 = 86,703.45/x
  3. Step 3: Cross multiply
    219,976.80x = 329,831.55 × 86,703.45
  4. Step 4: Simplify right side
    219,976.80x = 28,597,533,303.85
  5. Step 5: Solve for x
    x = 28,597,533,303.85/219,976.80
  6. Step 6: Final answer
    x = 130,002.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.