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Finding the Fourth Proportional to 152,879.12, 210,966.08 and 84,900.41

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Solution

The fourth proportional to 152,879.12, 210,966.08 and 84,900.41 is: 117,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,879.12 : 210,966.08 = 84,900.41 : x
  2. Step 2: Convert to fraction form
    152,879.12/210,966.08 = 84,900.41/x
  3. Step 3: Cross multiply
    152,879.12x = 210,966.08 × 84,900.41
  4. Step 4: Simplify right side
    152,879.12x = 17,911,105,208.76
  5. Step 5: Solve for x
    x = 17,911,105,208.76/152,879.12
  6. Step 6: Final answer
    x = 117,158.61

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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.