Home / 143,014.51-197,248.44-99,979.81

Finding the Fourth Proportional to 143,014.51, 197,248.44 and 99,979.81

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Solution

The fourth proportional to 143,014.51, 197,248.44 and 99,979.81 is: 137,894.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,014.51 : 197,248.44 = 99,979.81 : x
  2. Step 2: Convert to fraction form
    143,014.51/197,248.44 = 99,979.81/x
  3. Step 3: Cross multiply
    143,014.51x = 197,248.44 × 99,979.81
  4. Step 4: Simplify right side
    143,014.51x = 19,720,861,554.00
  5. Step 5: Solve for x
    x = 19,720,861,554.00/143,014.51
  6. Step 6: Final answer
    x = 137,894.13

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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.