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Finding the Fourth Proportional to 210,006.70, 314,981.70 and 83,739.85

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Solution

The fourth proportional to 210,006.70, 314,981.70 and 83,739.85 is: 125,598.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006.70 : 314,981.70 = 83,739.85 : x
  2. Step 2: Convert to fraction form
    210,006.70/314,981.70 = 83,739.85/x
  3. Step 3: Cross multiply
    210,006.70x = 314,981.70 × 83,739.85
  4. Step 4: Simplify right side
    210,006.70x = 26,376,520,310.75
  5. Step 5: Solve for x
    x = 26,376,520,310.75/210,006.70
  6. Step 6: Final answer
    x = 125,598.47

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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.