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Finding the Fourth Proportional to 153,362.19, 211,620.80 and 88,830.61

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Solution

The fourth proportional to 153,362.19, 211,620.80 and 88,830.61 is: 122,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,362.19 : 211,620.80 = 88,830.61 : x
  2. Step 2: Convert to fraction form
    153,362.19/211,620.80 = 88,830.61/x
  3. Step 3: Cross multiply
    153,362.19x = 211,620.80 × 88,830.61
  4. Step 4: Simplify right side
    153,362.19x = 18,798,404,445.71
  5. Step 5: Solve for x
    x = 18,798,404,445.71/153,362.19
  6. Step 6: Final answer
    x = 122,575.22

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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.