Home / 142,805.02-197,073.09-78,273.76

Finding the Fourth Proportional to 142,805.02, 197,073.09 and 78,273.76

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Solution

The fourth proportional to 142,805.02, 197,073.09 and 78,273.76 is: 108,018.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,805.02 : 197,073.09 = 78,273.76 : x
  2. Step 2: Convert to fraction form
    142,805.02/197,073.09 = 78,273.76/x
  3. Step 3: Cross multiply
    142,805.02x = 197,073.09 × 78,273.76
  4. Step 4: Simplify right side
    142,805.02x = 15,425,651,749.12
  5. Step 5: Solve for x
    x = 15,425,651,749.12/142,805.02
  6. Step 6: Final answer
    x = 108,018.97

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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.