Home / 118,358.60-163,338.40-64,646.15

Finding the Fourth Proportional to 118,358.60, 163,338.40 and 64,646.15

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Solution

The fourth proportional to 118,358.60, 163,338.40 and 64,646.15 is: 89,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.60 : 163,338.40 = 64,646.15 : x
  2. Step 2: Convert to fraction form
    118,358.60/163,338.40 = 64,646.15/x
  3. Step 3: Cross multiply
    118,358.60x = 163,338.40 × 64,646.15
  4. Step 4: Simplify right side
    118,358.60x = 10,559,198,707.16
  5. Step 5: Solve for x
    x = 10,559,198,707.16/118,358.60
  6. Step 6: Final answer
    x = 89,213.62

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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.