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Finding the Fourth Proportional to 145,752.98, 218,135.67 and 89,628.64

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Solution

The fourth proportional to 145,752.98, 218,135.67 and 89,628.64 is: 134,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,752.98 : 218,135.67 = 89,628.64 : x
  2. Step 2: Convert to fraction form
    145,752.98/218,135.67 = 89,628.64/x
  3. Step 3: Cross multiply
    145,752.98x = 218,135.67 × 89,628.64
  4. Step 4: Simplify right side
    145,752.98x = 19,551,201,898.77
  5. Step 5: Solve for x
    x = 19,551,201,898.77/145,752.98
  6. Step 6: Final answer
    x = 134,139.29

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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.