Home / 142,983.09-197,316.74-79,320.94

Finding the Fourth Proportional to 142,983.09, 197,316.74 and 79,320.94

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Solution

The fourth proportional to 142,983.09, 197,316.74 and 79,320.94 is: 109,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,983.09 : 197,316.74 = 79,320.94 : x
  2. Step 2: Convert to fraction form
    142,983.09/197,316.74 = 79,320.94/x
  3. Step 3: Cross multiply
    142,983.09x = 197,316.74 × 79,320.94
  4. Step 4: Simplify right side
    142,983.09x = 15,651,348,999.55
  5. Step 5: Solve for x
    x = 15,651,348,999.55/142,983.09
  6. Step 6: Final answer
    x = 109,462.94

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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.