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Finding the Fourth Proportional to 109,485.78, 151,090.48 and 64,154.74

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Solution

The fourth proportional to 109,485.78, 151,090.48 and 64,154.74 is: 88,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,485.78 : 151,090.48 = 64,154.74 : x
  2. Step 2: Convert to fraction form
    109,485.78/151,090.48 = 64,154.74/x
  3. Step 3: Cross multiply
    109,485.78x = 151,090.48 × 64,154.74
  4. Step 4: Simplify right side
    109,485.78x = 9,693,170,460.88
  5. Step 5: Solve for x
    x = 9,693,170,460.88/109,485.78
  6. Step 6: Final answer
    x = 88,533.60

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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.