Home / 143,817.47-198,468.29-86,457.42

Finding the Fourth Proportional to 143,817.47, 198,468.29 and 86,457.42

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Solution

The fourth proportional to 143,817.47, 198,468.29 and 86,457.42 is: 119,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,817.47 : 198,468.29 = 86,457.42 : x
  2. Step 2: Convert to fraction form
    143,817.47/198,468.29 = 86,457.42/x
  3. Step 3: Cross multiply
    143,817.47x = 198,468.29 × 86,457.42
  4. Step 4: Simplify right side
    143,817.47x = 17,159,056,521.36
  5. Step 5: Solve for x
    x = 17,159,056,521.36/143,817.47
  6. Step 6: Final answer
    x = 119,311.35

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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.