Home / 103,929.90-143,419.77-65,710.02

Finding the Fourth Proportional to 103,929.90, 143,419.77 and 65,710.02

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Solution

The fourth proportional to 103,929.90, 143,419.77 and 65,710.02 is: 90,677.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.90 : 143,419.77 = 65,710.02 : x
  2. Step 2: Convert to fraction form
    103,929.90/143,419.77 = 65,710.02/x
  3. Step 3: Cross multiply
    103,929.90x = 143,419.77 × 65,710.02
  4. Step 4: Simplify right side
    103,929.90x = 9,424,115,955.10
  5. Step 5: Solve for x
    x = 9,424,115,955.10/103,929.90
  6. Step 6: Final answer
    x = 90,677.62

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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.