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Finding the Fourth Proportional to 118,666.90, 163,760.40 and 64,951.90

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Solution

The fourth proportional to 118,666.90, 163,760.40 and 64,951.90 is: 89,633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,666.90 : 163,760.40 = 64,951.90 : x
  2. Step 2: Convert to fraction form
    118,666.90/163,760.40 = 64,951.90/x
  3. Step 3: Cross multiply
    118,666.90x = 163,760.40 × 64,951.90
  4. Step 4: Simplify right side
    118,666.90x = 10,636,549,124.76
  5. Step 5: Solve for x
    x = 10,636,549,124.76/118,666.90
  6. Step 6: Final answer
    x = 89,633.66

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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.