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Finding the Fourth Proportional to 210,123.70, 289,969.35 and 119,479.68

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Solution

The fourth proportional to 210,123.70, 289,969.35 and 119,479.68 is: 164,881.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,123.70 : 289,969.35 = 119,479.68 : x
  2. Step 2: Convert to fraction form
    210,123.70/289,969.35 = 119,479.68/x
  3. Step 3: Cross multiply
    210,123.70x = 289,969.35 × 119,479.68
  4. Step 4: Simplify right side
    210,123.70x = 34,645,446,171.43
  5. Step 5: Solve for x
    x = 34,645,446,171.43/210,123.70
  6. Step 6: Final answer
    x = 164,881.20

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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.