Home / 113,189.84-156,159.60-70,149.68

Finding the Fourth Proportional to 113,189.84, 156,159.60 and 70,149.68

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Solution

The fourth proportional to 113,189.84, 156,159.60 and 70,149.68 is: 96,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,189.84 : 156,159.60 = 70,149.68 : x
  2. Step 2: Convert to fraction form
    113,189.84/156,159.60 = 70,149.68/x
  3. Step 3: Cross multiply
    113,189.84x = 156,159.60 × 70,149.68
  4. Step 4: Simplify right side
    113,189.84x = 10,954,545,968.93
  5. Step 5: Solve for x
    x = 10,954,545,968.93/113,189.84
  6. Step 6: Final answer
    x = 96,780.29

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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.