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Finding the Fourth Proportional to 113,886.60, 170,829.90 and 107,435.40

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Solution

The fourth proportional to 113,886.60, 170,829.90 and 107,435.40 is: 161,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,886.60 : 170,829.90 = 107,435.40 : x
  2. Step 2: Convert to fraction form
    113,886.60/170,829.90 = 107,435.40/x
  3. Step 3: Cross multiply
    113,886.60x = 170,829.90 × 107,435.40
  4. Step 4: Simplify right side
    113,886.60x = 18,353,178,638.46
  5. Step 5: Solve for x
    x = 18,353,178,638.46/113,886.60
  6. Step 6: Final answer
    x = 161,153.10

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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.