Home / 142,728.27-196,965.02-79,070.19

Finding the Fourth Proportional to 142,728.27, 196,965.02 and 79,070.19

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Solution

The fourth proportional to 142,728.27, 196,965.02 and 79,070.19 is: 109,116.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,728.27 : 196,965.02 = 79,070.19 : x
  2. Step 2: Convert to fraction form
    142,728.27/196,965.02 = 79,070.19/x
  3. Step 3: Cross multiply
    142,728.27x = 196,965.02 × 79,070.19
  4. Step 4: Simplify right side
    142,728.27x = 15,574,061,159.40
  5. Step 5: Solve for x
    x = 15,574,061,159.40/142,728.27
  6. Step 6: Final answer
    x = 109,116.86

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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.