Home / 103,102.56-142,350.06-79,186.50

Finding the Fourth Proportional to 103,102.56, 142,350.06 and 79,186.50

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Solution

The fourth proportional to 103,102.56, 142,350.06 and 79,186.50 is: 109,330.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,102.56 : 142,350.06 = 79,186.50 : x
  2. Step 2: Convert to fraction form
    103,102.56/142,350.06 = 79,186.50/x
  3. Step 3: Cross multiply
    103,102.56x = 142,350.06 × 79,186.50
  4. Step 4: Simplify right side
    103,102.56x = 11,272,203,026.19
  5. Step 5: Solve for x
    x = 11,272,203,026.19/103,102.56
  6. Step 6: Final answer
    x = 109,330.00

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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.