Home / 142,725.92-196,973.76-79,069.64

Finding the Fourth Proportional to 142,725.92, 196,973.76 and 79,069.64

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Solution

The fourth proportional to 142,725.92, 196,973.76 and 79,069.64 is: 109,122.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,725.92 : 196,973.76 = 79,069.64 : x
  2. Step 2: Convert to fraction form
    142,725.92/196,973.76 = 79,069.64/x
  3. Step 3: Cross multiply
    142,725.92x = 196,973.76 × 79,069.64
  4. Step 4: Simplify right side
    142,725.92x = 15,574,643,307.78
  5. Step 5: Solve for x
    x = 15,574,643,307.78/142,725.92
  6. Step 6: Final answer
    x = 109,122.74

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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.