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Finding the Fourth Proportional to 118,445.76, 163,455.57 and 64,730.76

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Solution

The fourth proportional to 118,445.76, 163,455.57 and 64,730.76 is: 89,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,445.76 : 163,455.57 = 64,730.76 : x
  2. Step 2: Convert to fraction form
    118,445.76/163,455.57 = 64,730.76/x
  3. Step 3: Cross multiply
    118,445.76x = 163,455.57 × 64,730.76
  4. Step 4: Simplify right side
    118,445.76x = 10,580,603,578.81
  5. Step 5: Solve for x
    x = 10,580,603,578.81/118,445.76
  6. Step 6: Final answer
    x = 89,328.68

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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.