Home / 142,395.71-196,512.23-78,733.50

Finding the Fourth Proportional to 142,395.71, 196,512.23 and 78,733.50

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Solution

The fourth proportional to 142,395.71, 196,512.23 and 78,733.50 is: 108,655.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,395.71 : 196,512.23 = 78,733.50 : x
  2. Step 2: Convert to fraction form
    142,395.71/196,512.23 = 78,733.50/x
  3. Step 3: Cross multiply
    142,395.71x = 196,512.23 × 78,733.50
  4. Step 4: Simplify right side
    142,395.71x = 15,472,095,267.04
  5. Step 5: Solve for x
    x = 15,472,095,267.04/142,395.71
  6. Step 6: Final answer
    x = 108,655.63

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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.