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Finding the Fourth Proportional to 159,767.60, 220,492.44 and 90,878.64

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Solution

The fourth proportional to 159,767.60, 220,492.44 and 90,878.64 is: 125,420.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,767.60 : 220,492.44 = 90,878.64 : x
  2. Step 2: Convert to fraction form
    159,767.60/220,492.44 = 90,878.64/x
  3. Step 3: Cross multiply
    159,767.60x = 220,492.44 × 90,878.64
  4. Step 4: Simplify right side
    159,767.60x = 20,038,053,077.48
  5. Step 5: Solve for x
    x = 20,038,053,077.48/159,767.60
  6. Step 6: Final answer
    x = 125,420.01

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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.