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Finding the Fourth Proportional to 118,689.53, 163,793.48 and 64,973.63

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Solution

The fourth proportional to 118,689.53, 163,793.48 and 64,973.63 is: 89,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,689.53 : 163,793.48 = 64,973.63 : x
  2. Step 2: Convert to fraction form
    118,689.53/163,793.48 = 64,973.63/x
  3. Step 3: Cross multiply
    118,689.53x = 163,793.48 × 64,973.63
  4. Step 4: Simplify right side
    118,689.53x = 10,642,257,050.55
  5. Step 5: Solve for x
    x = 10,642,257,050.55/118,689.53
  6. Step 6: Final answer
    x = 89,664.67

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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.