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Finding the Fourth Proportional to 118,106.76, 162,987.21 and 64,391.76

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Solution

The fourth proportional to 118,106.76, 162,987.21 and 64,391.76 is: 88,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,106.76 : 162,987.21 = 64,391.76 : x
  2. Step 2: Convert to fraction form
    118,106.76/162,987.21 = 64,391.76/x
  3. Step 3: Cross multiply
    118,106.76x = 162,987.21 × 64,391.76
  4. Step 4: Simplify right side
    118,106.76x = 10,495,033,247.77
  5. Step 5: Solve for x
    x = 10,495,033,247.77/118,106.76
  6. Step 6: Final answer
    x = 88,860.57

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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.