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Finding the Fourth Proportional to 185,421.63, 255,423.80 and 158,108.76

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Solution

The fourth proportional to 185,421.63, 255,423.80 and 158,108.76 is: 217,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,421.63 : 255,423.80 = 158,108.76 : x
  2. Step 2: Convert to fraction form
    185,421.63/255,423.80 = 158,108.76/x
  3. Step 3: Cross multiply
    185,421.63x = 255,423.80 × 158,108.76
  4. Step 4: Simplify right side
    185,421.63x = 40,384,739,501.94
  5. Step 5: Solve for x
    x = 40,384,739,501.94/185,421.63
  6. Step 6: Final answer
    x = 217,799.51

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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.