Home / 143,116.24-197,431.80-100,698.16

Finding the Fourth Proportional to 143,116.24, 197,431.80 and 100,698.16

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Solution

The fourth proportional to 143,116.24, 197,431.80 and 100,698.16 is: 138,915.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,116.24 : 197,431.80 = 100,698.16 : x
  2. Step 2: Convert to fraction form
    143,116.24/197,431.80 = 100,698.16/x
  3. Step 3: Cross multiply
    143,116.24x = 197,431.80 × 100,698.16
  4. Step 4: Simplify right side
    143,116.24x = 19,881,018,985.49
  5. Step 5: Solve for x
    x = 19,881,018,985.49/143,116.24
  6. Step 6: Final answer
    x = 138,915.19

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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.