Home / 118,347.78-163,319.07-64,632.81

Finding the Fourth Proportional to 118,347.78, 163,319.07 and 64,632.81

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Solution

The fourth proportional to 118,347.78, 163,319.07 and 64,632.81 is: 89,192.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,347.78 : 163,319.07 = 64,632.81 : x
  2. Step 2: Convert to fraction form
    118,347.78/163,319.07 = 64,632.81/x
  3. Step 3: Cross multiply
    118,347.78x = 163,319.07 × 64,632.81
  4. Step 4: Simplify right side
    118,347.78x = 10,555,770,420.69
  5. Step 5: Solve for x
    x = 10,555,770,420.69/118,347.78
  6. Step 6: Final answer
    x = 89,192.80

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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.