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Finding the Fourth Proportional to 118,423.88, 163,423.01 and 64,707.74

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Solution

The fourth proportional to 118,423.88, 163,423.01 and 64,707.74 is: 89,295.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,423.88 : 163,423.01 = 64,707.74 : x
  2. Step 2: Convert to fraction form
    118,423.88/163,423.01 = 64,707.74/x
  3. Step 3: Cross multiply
    118,423.88x = 163,423.01 × 64,707.74
  4. Step 4: Simplify right side
    118,423.88x = 10,574,733,641.10
  5. Step 5: Solve for x
    x = 10,574,733,641.10/118,423.88
  6. Step 6: Final answer
    x = 89,295.62

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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.