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Finding the Fourth Proportional to 145,389.56, 218,042.21 and 56,623.28

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Solution

The fourth proportional to 145,389.56, 218,042.21 and 56,623.28 is: 84,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,389.56 : 218,042.21 = 56,623.28 : x
  2. Step 2: Convert to fraction form
    145,389.56/218,042.21 = 56,623.28/x
  3. Step 3: Cross multiply
    145,389.56x = 218,042.21 × 56,623.28
  4. Step 4: Simplify right side
    145,389.56x = 12,346,264,160.00
  5. Step 5: Solve for x
    x = 12,346,264,160.00/145,389.56
  6. Step 6: Final answer
    x = 84,918.51

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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.