Home / 143,010.36-197,345.16-79,348.01

Finding the Fourth Proportional to 143,010.36, 197,345.16 and 79,348.01

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Solution

The fourth proportional to 143,010.36, 197,345.16 and 79,348.01 is: 109,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,010.36 : 197,345.16 = 79,348.01 : x
  2. Step 2: Convert to fraction form
    143,010.36/197,345.16 = 79,348.01/x
  3. Step 3: Cross multiply
    143,010.36x = 197,345.16 × 79,348.01
  4. Step 4: Simplify right side
    143,010.36x = 15,658,944,742.41
  5. Step 5: Solve for x
    x = 15,658,944,742.41/143,010.36
  6. Step 6: Final answer
    x = 109,495.18

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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.