Home / 103,433.78-142,728.54-58,101.50

Finding the Fourth Proportional to 103,433.78, 142,728.54 and 58,101.50

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Solution

The fourth proportional to 103,433.78, 142,728.54 and 58,101.50 is: 80,174.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,433.78 : 142,728.54 = 58,101.50 : x
  2. Step 2: Convert to fraction form
    103,433.78/142,728.54 = 58,101.50/x
  3. Step 3: Cross multiply
    103,433.78x = 142,728.54 × 58,101.50
  4. Step 4: Simplify right side
    103,433.78x = 8,292,742,266.81
  5. Step 5: Solve for x
    x = 8,292,742,266.81/103,433.78
  6. Step 6: Final answer
    x = 80,174.41

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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.