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Finding the Fourth Proportional to 118,775.34, 163,864.35 and 67,790.90

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Solution

The fourth proportional to 118,775.34, 163,864.35 and 67,790.90 is: 93,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,775.34 : 163,864.35 = 67,790.90 : x
  2. Step 2: Convert to fraction form
    118,775.34/163,864.35 = 67,790.90/x
  3. Step 3: Cross multiply
    118,775.34x = 163,864.35 × 67,790.90
  4. Step 4: Simplify right side
    118,775.34x = 11,108,511,764.42
  5. Step 5: Solve for x
    x = 11,108,511,764.42/118,775.34
  6. Step 6: Final answer
    x = 93,525.40

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1.5x scale

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.