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Finding the Fourth Proportional to 170,158.78, 255,238.09 and 70,209.08

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Solution

The fourth proportional to 170,158.78, 255,238.09 and 70,209.08 is: 105,313.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,158.78 : 255,238.09 = 70,209.08 : x
  2. Step 2: Convert to fraction form
    170,158.78/255,238.09 = 70,209.08/x
  3. Step 3: Cross multiply
    170,158.78x = 255,238.09 × 70,209.08
  4. Step 4: Simplify right side
    170,158.78x = 17,920,030,985.29
  5. Step 5: Solve for x
    x = 17,920,030,985.29/170,158.78
  6. Step 6: Final answer
    x = 105,313.59

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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.