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Finding the Fourth Proportional to 93,173.76, 128,659.72 and 90,161.04

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Solution

The fourth proportional to 93,173.76, 128,659.72 and 90,161.04 is: 124,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,173.76 : 128,659.72 = 90,161.04 : x
  2. Step 2: Convert to fraction form
    93,173.76/128,659.72 = 90,161.04/x
  3. Step 3: Cross multiply
    93,173.76x = 128,659.72 × 90,161.04
  4. Step 4: Simplify right side
    93,173.76x = 11,600,094,161.31
  5. Step 5: Solve for x
    x = 11,600,094,161.31/93,173.76
  6. Step 6: Final answer
    x = 124,499.58

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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.