Home / 142,133.63-196,141.49-81,702.72

Finding the Fourth Proportional to 142,133.63, 196,141.49 and 81,702.72

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Solution

The fourth proportional to 142,133.63, 196,141.49 and 81,702.72 is: 112,748.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,133.63 : 196,141.49 = 81,702.72 : x
  2. Step 2: Convert to fraction form
    142,133.63/196,141.49 = 81,702.72/x
  3. Step 3: Cross multiply
    142,133.63x = 196,141.49 × 81,702.72
  4. Step 4: Simplify right side
    142,133.63x = 16,025,292,829.34
  5. Step 5: Solve for x
    x = 16,025,292,829.34/142,133.63
  6. Step 6: Final answer
    x = 112,748.08

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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.