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Finding the Fourth Proportional to 152,762.97, 210,765.65 and 89,055.66

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Solution

The fourth proportional to 152,762.97, 210,765.65 and 89,055.66 is: 122,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,762.97 : 210,765.65 = 89,055.66 : x
  2. Step 2: Convert to fraction form
    152,762.97/210,765.65 = 89,055.66/x
  3. Step 3: Cross multiply
    152,762.97x = 210,765.65 × 89,055.66
  4. Step 4: Simplify right side
    152,762.97x = 18,769,874,066.08
  5. Step 5: Solve for x
    x = 18,769,874,066.08/152,762.97
  6. Step 6: Final answer
    x = 122,869.27

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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.