Home / 143,318.64-197,795.76-86,761.20

Finding the Fourth Proportional to 143,318.64, 197,795.76 and 86,761.20

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Solution

The fourth proportional to 143,318.64, 197,795.76 and 86,761.20 is: 119,740.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.64 : 197,795.76 = 86,761.20 : x
  2. Step 2: Convert to fraction form
    143,318.64/197,795.76 = 86,761.20/x
  3. Step 3: Cross multiply
    143,318.64x = 197,795.76 × 86,761.20
  4. Step 4: Simplify right side
    143,318.64x = 17,160,997,492.51
  5. Step 5: Solve for x
    x = 17,160,997,492.51/143,318.64
  6. Step 6: Final answer
    x = 119,740.16

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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.