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Finding the Fourth Proportional to 134,872.60, 202,308.90 and 84,790.30

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Solution

The fourth proportional to 134,872.60, 202,308.90 and 84,790.30 is: 127,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,872.60 : 202,308.90 = 84,790.30 : x
  2. Step 2: Convert to fraction form
    134,872.60/202,308.90 = 84,790.30/x
  3. Step 3: Cross multiply
    134,872.60x = 202,308.90 × 84,790.30
  4. Step 4: Simplify right side
    134,872.60x = 17,153,832,323.67
  5. Step 5: Solve for x
    x = 17,153,832,323.67/134,872.60
  6. Step 6: Final answer
    x = 127,185.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.