Home / 118,455.12-163,468.35-64,740.78

Finding the Fourth Proportional to 118,455.12, 163,468.35 and 64,740.78

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Solution

The fourth proportional to 118,455.12, 163,468.35 and 64,740.78 is: 89,342.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,455.12 : 163,468.35 = 64,740.78 : x
  2. Step 2: Convert to fraction form
    118,455.12/163,468.35 = 64,740.78/x
  3. Step 3: Cross multiply
    118,455.12x = 163,468.35 × 64,740.78
  4. Step 4: Simplify right side
    118,455.12x = 10,583,068,484.31
  5. Step 5: Solve for x
    x = 10,583,068,484.31/118,455.12
  6. Step 6: Final answer
    x = 89,342.43

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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.