Home / 142,050.78-196,063.63-81,656.46

Finding the Fourth Proportional to 142,050.78, 196,063.63 and 81,656.46

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Solution

The fourth proportional to 142,050.78, 196,063.63 and 81,656.46 is: 112,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,050.78 : 196,063.63 = 81,656.46 : x
  2. Step 2: Convert to fraction form
    142,050.78/196,063.63 = 81,656.46/x
  3. Step 3: Cross multiply
    142,050.78x = 196,063.63 × 81,656.46
  4. Step 4: Simplify right side
    142,050.78x = 16,009,861,960.55
  5. Step 5: Solve for x
    x = 16,009,861,960.55/142,050.78
  6. Step 6: Final answer
    x = 112,705.20

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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.