Home / 142,884.67-197,090.47-91,809.62

Finding the Fourth Proportional to 142,884.67, 197,090.47 and 91,809.62

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Solution

The fourth proportional to 142,884.67, 197,090.47 and 91,809.62 is: 126,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,884.67 : 197,090.47 = 91,809.62 : x
  2. Step 2: Convert to fraction form
    142,884.67/197,090.47 = 91,809.62/x
  3. Step 3: Cross multiply
    142,884.67x = 197,090.47 × 91,809.62
  4. Step 4: Simplify right side
    142,884.67x = 18,094,799,711.82
  5. Step 5: Solve for x
    x = 18,094,799,711.82/142,884.67
  6. Step 6: Final answer
    x = 126,639.20

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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.