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Finding the Fourth Proportional to 153,573.16, 211,858.50 and 89,871.52

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Solution

The fourth proportional to 153,573.16, 211,858.50 and 89,871.52 is: 123,980.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,573.16 : 211,858.50 = 89,871.52 : x
  2. Step 2: Convert to fraction form
    153,573.16/211,858.50 = 89,871.52/x
  3. Step 3: Cross multiply
    153,573.16x = 211,858.50 × 89,871.52
  4. Step 4: Simplify right side
    153,573.16x = 19,040,045,419.92
  5. Step 5: Solve for x
    x = 19,040,045,419.92/153,573.16
  6. Step 6: Final answer
    x = 123,980.29

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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.