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Finding the Fourth Proportional to 155,289.84, 214,298.80 and 88,221.84

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Solution

The fourth proportional to 155,289.84, 214,298.80 and 88,221.84 is: 121,745.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,289.84 : 214,298.80 = 88,221.84 : x
  2. Step 2: Convert to fraction form
    155,289.84/214,298.80 = 88,221.84/x
  3. Step 3: Cross multiply
    155,289.84x = 214,298.80 × 88,221.84
  4. Step 4: Simplify right side
    155,289.84x = 18,905,834,445.79
  5. Step 5: Solve for x
    x = 18,905,834,445.79/155,289.84
  6. Step 6: Final answer
    x = 121,745.47

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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.