Home / 142,983.02-197,316.80-79,320.82

Finding the Fourth Proportional to 142,983.02, 197,316.80 and 79,320.82

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Solution

The fourth proportional to 142,983.02, 197,316.80 and 79,320.82 is: 109,462.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,983.02 : 197,316.80 = 79,320.82 : x
  2. Step 2: Convert to fraction form
    142,983.02/197,316.80 = 79,320.82/x
  3. Step 3: Cross multiply
    142,983.02x = 197,316.80 × 79,320.82
  4. Step 4: Simplify right side
    142,983.02x = 15,651,329,882.48
  5. Step 5: Solve for x
    x = 15,651,329,882.48/142,983.02
  6. Step 6: Final answer
    x = 109,462.86

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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.