Home / 103,988.89-143,501.37-58,666.28

Finding the Fourth Proportional to 103,988.89, 143,501.37 and 58,666.28

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Solution

The fourth proportional to 103,988.89, 143,501.37 and 58,666.28 is: 80,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,988.89 : 143,501.37 = 58,666.28 : x
  2. Step 2: Convert to fraction form
    103,988.89/143,501.37 = 58,666.28/x
  3. Step 3: Cross multiply
    103,988.89x = 143,501.37 × 58,666.28
  4. Step 4: Simplify right side
    103,988.89x = 8,418,690,945.30
  5. Step 5: Solve for x
    x = 8,418,690,945.30/103,988.89
  6. Step 6: Final answer
    x = 80,957.60

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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.