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Finding the Fourth Proportional to 112,704.64, 155,532.40 and 64,961.06

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Solution

The fourth proportional to 112,704.64, 155,532.40 and 64,961.06 is: 89,646.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,704.64 : 155,532.40 = 64,961.06 : x
  2. Step 2: Convert to fraction form
    112,704.64/155,532.40 = 64,961.06/x
  3. Step 3: Cross multiply
    112,704.64x = 155,532.40 × 64,961.06
  4. Step 4: Simplify right side
    112,704.64x = 10,103,549,568.34
  5. Step 5: Solve for x
    x = 10,103,549,568.34/112,704.64
  6. Step 6: Final answer
    x = 89,646.26

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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.