Home / 142,160.72-196,193.34-81,750.92

Finding the Fourth Proportional to 142,160.72, 196,193.34 and 81,750.92

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Solution

The fourth proportional to 142,160.72, 196,193.34 and 81,750.92 is: 112,822.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,160.72 : 196,193.34 = 81,750.92 : x
  2. Step 2: Convert to fraction form
    142,160.72/196,193.34 = 81,750.92/x
  3. Step 3: Cross multiply
    142,160.72x = 196,193.34 × 81,750.92
  4. Step 4: Simplify right side
    142,160.72x = 16,038,985,061.91
  5. Step 5: Solve for x
    x = 16,038,985,061.91/142,160.72
  6. Step 6: Final answer
    x = 112,822.91

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1.5x scale

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.