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Finding the Fourth Proportional to 118,422.94, 163,423.70 and 63,975.12

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Solution

The fourth proportional to 118,422.94, 163,423.70 and 63,975.12 is: 88,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,422.94 : 163,423.70 = 63,975.12 : x
  2. Step 2: Convert to fraction form
    118,422.94/163,423.70 = 63,975.12/x
  3. Step 3: Cross multiply
    118,422.94x = 163,423.70 × 63,975.12
  4. Step 4: Simplify right side
    118,422.94x = 10,455,050,818.34
  5. Step 5: Solve for x
    x = 10,455,050,818.34/118,422.94
  6. Step 6: Final answer
    x = 88,285.69

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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.