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Finding the Fourth Proportional to 210,101.40, 315,154.80 and 69,860.04

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Solution

The fourth proportional to 210,101.40, 315,154.80 and 69,860.04 is: 104,790.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,101.40 : 315,154.80 = 69,860.04 : x
  2. Step 2: Convert to fraction form
    210,101.40/315,154.80 = 69,860.04/x
  3. Step 3: Cross multiply
    210,101.40x = 315,154.80 × 69,860.04
  4. Step 4: Simplify right side
    210,101.40x = 22,016,726,934.19
  5. Step 5: Solve for x
    x = 22,016,726,934.19/210,101.40
  6. Step 6: Final answer
    x = 104,790.96

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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.