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Finding the Fourth Proportional to 153,300.80, 211,580.40 and 89,626.40

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Solution

The fourth proportional to 153,300.80, 211,580.40 and 89,626.40 is: 123,699.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,300.80 : 211,580.40 = 89,626.40 : x
  2. Step 2: Convert to fraction form
    153,300.80/211,580.40 = 89,626.40/x
  3. Step 3: Cross multiply
    153,300.80x = 211,580.40 × 89,626.40
  4. Step 4: Simplify right side
    153,300.80x = 18,963,189,562.56
  5. Step 5: Solve for x
    x = 18,963,189,562.56/153,300.80
  6. Step 6: Final answer
    x = 123,699.22

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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.