Home / 142,285.65-196,391.08-81,862.48

Finding the Fourth Proportional to 142,285.65, 196,391.08 and 81,862.48

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Solution

The fourth proportional to 142,285.65, 196,391.08 and 81,862.48 is: 112,991.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,285.65 : 196,391.08 = 81,862.48 : x
  2. Step 2: Convert to fraction form
    142,285.65/196,391.08 = 81,862.48/x
  3. Step 3: Cross multiply
    142,285.65x = 196,391.08 × 81,862.48
  4. Step 4: Simplify right side
    142,285.65x = 16,077,060,858.68
  5. Step 5: Solve for x
    x = 16,077,060,858.68/142,285.65
  6. Step 6: Final answer
    x = 112,991.44

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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.