Home / 118,428.82-163,429.81-64,712.68

Finding the Fourth Proportional to 118,428.82, 163,429.81 and 64,712.68

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Solution

The fourth proportional to 118,428.82, 163,429.81 and 64,712.68 is: 89,302.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,428.82 : 163,429.81 = 64,712.68 : x
  2. Step 2: Convert to fraction form
    118,428.82/163,429.81 = 64,712.68/x
  3. Step 3: Cross multiply
    118,428.82x = 163,429.81 × 64,712.68
  4. Step 4: Simplify right side
    118,428.82x = 10,575,980,996.99
  5. Step 5: Solve for x
    x = 10,575,980,996.99/118,428.82
  6. Step 6: Final answer
    x = 89,302.43

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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.