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Finding the Fourth Proportional to 169,810.30, 254,715.45 and 91,078.30

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Solution

The fourth proportional to 169,810.30, 254,715.45 and 91,078.30 is: 136,617.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,810.30 : 254,715.45 = 91,078.30 : x
  2. Step 2: Convert to fraction form
    169,810.30/254,715.45 = 91,078.30/x
  3. Step 3: Cross multiply
    169,810.30x = 254,715.45 × 91,078.30
  4. Step 4: Simplify right side
    169,810.30x = 23,199,050,169.74
  5. Step 5: Solve for x
    x = 23,199,050,169.74/169,810.30
  6. Step 6: Final answer
    x = 136,617.45

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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.