Home / 113,638.86-156,756.60-71,123.58

Finding the Fourth Proportional to 113,638.86, 156,756.60 and 71,123.58

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Solution

The fourth proportional to 113,638.86, 156,756.60 and 71,123.58 is: 98,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,638.86 : 156,756.60 = 71,123.58 : x
  2. Step 2: Convert to fraction form
    113,638.86/156,756.60 = 71,123.58/x
  3. Step 3: Cross multiply
    113,638.86x = 156,756.60 × 71,123.58
  4. Step 4: Simplify right side
    113,638.86x = 11,149,090,580.63
  5. Step 5: Solve for x
    x = 11,149,090,580.63/113,638.86
  6. Step 6: Final answer
    x = 98,109.84

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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.