Home / 143,329.84-197,763.06-86,740

Finding the Fourth Proportional to 143,329.84, 197,763.06 and 86,740

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Solution

The fourth proportional to 143,329.84, 197,763.06 and 86,740 is: 119,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,329.84 : 197,763.06 = 86,740 : x
  2. Step 2: Convert to fraction form
    143,329.84/197,763.06 = 86,740/x
  3. Step 3: Cross multiply
    143,329.84x = 197,763.06 × 86,740
  4. Step 4: Simplify right side
    143,329.84x = 17,153,967,824.40
  5. Step 5: Solve for x
    x = 17,153,967,824.40/143,329.84
  6. Step 6: Final answer
    x = 119,681.76

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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.