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Finding the Fourth Proportional to 118,627.64, 163,706.14 and 64,912.65

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Solution

The fourth proportional to 118,627.64, 163,706.14 and 64,912.65 is: 89,579.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,627.64 : 163,706.14 = 64,912.65 : x
  2. Step 2: Convert to fraction form
    118,627.64/163,706.14 = 64,912.65/x
  3. Step 3: Cross multiply
    118,627.64x = 163,706.14 × 64,912.65
  4. Step 4: Simplify right side
    118,627.64x = 10,626,599,368.67
  5. Step 5: Solve for x
    x = 10,626,599,368.67/118,627.64
  6. Step 6: Final answer
    x = 89,579.46

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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.