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Finding the Fourth Proportional to 143,373.36, 197,866.32 and 86,014.83

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Solution

The fourth proportional to 143,373.36, 197,866.32 and 86,014.83 is: 118,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,373.36 : 197,866.32 = 86,014.83 : x
  2. Step 2: Convert to fraction form
    143,373.36/197,866.32 = 86,014.83/x
  3. Step 3: Cross multiply
    143,373.36x = 197,866.32 × 86,014.83
  4. Step 4: Simplify right side
    143,373.36x = 17,019,437,877.53
  5. Step 5: Solve for x
    x = 17,019,437,877.53/143,373.36
  6. Step 6: Final answer
    x = 118,707.11

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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.