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Finding the Fourth Proportional to 110,971.60, 166,457.40 and 105,787.60

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Solution

The fourth proportional to 110,971.60, 166,457.40 and 105,787.60 is: 158,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,971.60 : 166,457.40 = 105,787.60 : x
  2. Step 2: Convert to fraction form
    110,971.60/166,457.40 = 105,787.60/x
  3. Step 3: Cross multiply
    110,971.60x = 166,457.40 × 105,787.60
  4. Step 4: Simplify right side
    110,971.60x = 17,609,128,848.24
  5. Step 5: Solve for x
    x = 17,609,128,848.24/110,971.60
  6. Step 6: Final answer
    x = 158,681.40

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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.