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Finding the Fourth Proportional to 134,903.10, 202,354.65 and 84,820.80

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Solution

The fourth proportional to 134,903.10, 202,354.65 and 84,820.80 is: 127,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,903.10 : 202,354.65 = 84,820.80 : x
  2. Step 2: Convert to fraction form
    134,903.10/202,354.65 = 84,820.80/x
  3. Step 3: Cross multiply
    134,903.10x = 202,354.65 × 84,820.80
  4. Step 4: Simplify right side
    134,903.10x = 17,163,883,296.72
  5. Step 5: Solve for x
    x = 17,163,883,296.72/134,903.10
  6. Step 6: Final answer
    x = 127,231.20

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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.