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Finding the Fourth Proportional to 210,073.70, 315,110.55 and 69,814.10

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Solution

The fourth proportional to 210,073.70, 315,110.55 and 69,814.10 is: 104,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,073.70 : 315,110.55 = 69,814.10 : x
  2. Step 2: Convert to fraction form
    210,073.70/315,110.55 = 69,814.10/x
  3. Step 3: Cross multiply
    210,073.70x = 315,110.55 × 69,814.10
  4. Step 4: Simplify right side
    210,073.70x = 21,999,159,448.76
  5. Step 5: Solve for x
    x = 21,999,159,448.76/210,073.70
  6. Step 6: Final answer
    x = 104,721.15

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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.