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Finding the Fourth Proportional to 210,139.65, 289,991.34 and 119,495.66

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Solution

The fourth proportional to 210,139.65, 289,991.34 and 119,495.66 is: 164,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,139.65 : 289,991.34 = 119,495.66 : x
  2. Step 2: Convert to fraction form
    210,139.65/289,991.34 = 119,495.66/x
  3. Step 3: Cross multiply
    210,139.65x = 289,991.34 × 119,495.66
  4. Step 4: Simplify right side
    210,139.65x = 34,652,705,117.63
  5. Step 5: Solve for x
    x = 34,652,705,117.63/210,139.65
  6. Step 6: Final answer
    x = 164,903.22

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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.