Home / 117,432.76-162,039.98-65,747.20

Finding the Fourth Proportional to 117,432.76, 162,039.98 and 65,747.20

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Solution

The fourth proportional to 117,432.76, 162,039.98 and 65,747.20 is: 90,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,432.76 : 162,039.98 = 65,747.20 : x
  2. Step 2: Convert to fraction form
    117,432.76/162,039.98 = 65,747.20/x
  3. Step 3: Cross multiply
    117,432.76x = 162,039.98 × 65,747.20
  4. Step 4: Simplify right side
    117,432.76x = 10,653,674,973.06
  5. Step 5: Solve for x
    x = 10,653,674,973.06/117,432.76
  6. Step 6: Final answer
    x = 90,721.49

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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.