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Finding the Fourth Proportional to 155,994.93, 215,254.80 and 88,012.98

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Solution

The fourth proportional to 155,994.93, 215,254.80 and 88,012.98 is: 121,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,994.93 : 215,254.80 = 88,012.98 : x
  2. Step 2: Convert to fraction form
    155,994.93/215,254.80 = 88,012.98/x
  3. Step 3: Cross multiply
    155,994.93x = 215,254.80 × 88,012.98
  4. Step 4: Simplify right side
    155,994.93x = 18,945,216,407.30
  5. Step 5: Solve for x
    x = 18,945,216,407.30/155,994.93
  6. Step 6: Final answer
    x = 121,447.64

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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.