Home / 103,190.61-142,342.56-64,889.41

Finding the Fourth Proportional to 103,190.61, 142,342.56 and 64,889.41

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Solution

The fourth proportional to 103,190.61, 142,342.56 and 64,889.41 is: 89,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,190.61 : 142,342.56 = 64,889.41 : x
  2. Step 2: Convert to fraction form
    103,190.61/142,342.56 = 64,889.41/x
  3. Step 3: Cross multiply
    103,190.61x = 142,342.56 × 64,889.41
  4. Step 4: Simplify right side
    103,190.61x = 9,236,524,024.58
  5. Step 5: Solve for x
    x = 9,236,524,024.58/103,190.61
  6. Step 6: Final answer
    x = 89,509.35

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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.