Home / 142,184.71-196,214.64-81,767.02

Finding the Fourth Proportional to 142,184.71, 196,214.64 and 81,767.02

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Solution

The fourth proportional to 142,184.71, 196,214.64 and 81,767.02 is: 112,838.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,184.71 : 196,214.64 = 81,767.02 : x
  2. Step 2: Convert to fraction form
    142,184.71/196,214.64 = 81,767.02/x
  3. Step 3: Cross multiply
    142,184.71x = 196,214.64 × 81,767.02
  4. Step 4: Simplify right side
    142,184.71x = 16,043,886,393.17
  5. Step 5: Solve for x
    x = 16,043,886,393.17/142,184.71
  6. Step 6: Final answer
    x = 112,838.34

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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.