Home / 142,899.12-197,210.70-79,242.84

Finding the Fourth Proportional to 142,899.12, 197,210.70 and 79,242.84

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Solution

The fourth proportional to 142,899.12, 197,210.70 and 79,242.84 is: 109,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,899.12 : 197,210.70 = 79,242.84 : x
  2. Step 2: Convert to fraction form
    142,899.12/197,210.70 = 79,242.84/x
  3. Step 3: Cross multiply
    142,899.12x = 197,210.70 × 79,242.84
  4. Step 4: Simplify right side
    142,899.12x = 15,627,535,946.39
  5. Step 5: Solve for x
    x = 15,627,535,946.39/142,899.12
  6. Step 6: Final answer
    x = 109,360.62

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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.