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Finding the Fourth Proportional to 155,848.48, 215,070.48 and 88,780.96

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Solution

The fourth proportional to 155,848.48, 215,070.48 and 88,780.96 is: 122,517.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,848.48 : 215,070.48 = 88,780.96 : x
  2. Step 2: Convert to fraction form
    155,848.48/215,070.48 = 88,780.96/x
  3. Step 3: Cross multiply
    155,848.48x = 215,070.48 × 88,780.96
  4. Step 4: Simplify right side
    155,848.48x = 19,094,163,682.06
  5. Step 5: Solve for x
    x = 19,094,163,682.06/155,848.48
  6. Step 6: Final answer
    x = 122,517.48

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1.5x scale

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.