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Finding the Fourth Proportional to 118,690.53, 163,794.86 and 64,974.63

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Solution

The fourth proportional to 118,690.53, 163,794.86 and 64,974.63 is: 89,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,690.53 : 163,794.86 = 64,974.63 : x
  2. Step 2: Convert to fraction form
    118,690.53/163,794.86 = 64,974.63/x
  3. Step 3: Cross multiply
    118,690.53x = 163,794.86 × 64,974.63
  4. Step 4: Simplify right side
    118,690.53x = 10,642,510,424.40
  5. Step 5: Solve for x
    x = 10,642,510,424.40/118,690.53
  6. Step 6: Final answer
    x = 89,666.05

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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.