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Finding the Fourth Proportional to 210,006.65, 314,663.70 and 121,105.10

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Solution

The fourth proportional to 210,006.65, 314,663.70 and 121,105.10 is: 181,457.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,006.65 : 314,663.70 = 121,105.10 : x
  2. Step 2: Convert to fraction form
    210,006.65/314,663.70 = 121,105.10/x
  3. Step 3: Cross multiply
    210,006.65x = 314,663.70 × 121,105.10
  4. Step 4: Simplify right side
    210,006.65x = 38,107,378,854.87
  5. Step 5: Solve for x
    x = 38,107,378,854.87/210,006.65
  6. Step 6: Final answer
    x = 181,457.96

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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.