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Finding the Fourth Proportional to 160,445.89, 240,406.35 and 85,486.51

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Solution

The fourth proportional to 160,445.89, 240,406.35 and 85,486.51 is: 128,089.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,445.89 : 240,406.35 = 85,486.51 : x
  2. Step 2: Convert to fraction form
    160,445.89/240,406.35 = 85,486.51/x
  3. Step 3: Cross multiply
    160,445.89x = 240,406.35 × 85,486.51
  4. Step 4: Simplify right side
    160,445.89x = 20,551,499,843.34
  5. Step 5: Solve for x
    x = 20,551,499,843.34/160,445.89
  6. Step 6: Final answer
    x = 128,089.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.