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Finding the Fourth Proportional to 118,133.91, 163,028.16 and 64,419.93

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Solution

The fourth proportional to 118,133.91, 163,028.16 and 64,419.93 is: 88,901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,133.91 : 163,028.16 = 64,419.93 : x
  2. Step 2: Convert to fraction form
    118,133.91/163,028.16 = 64,419.93/x
  3. Step 3: Cross multiply
    118,133.91x = 163,028.16 × 64,419.93
  4. Step 4: Simplify right side
    118,133.91x = 10,502,262,655.23
  5. Step 5: Solve for x
    x = 10,502,262,655.23/118,133.91
  6. Step 6: Final answer
    x = 88,901.34

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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.