Home / 113,107.78-156,089.19-70,690.51

Finding the Fourth Proportional to 113,107.78, 156,089.19 and 70,690.51

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Solution

The fourth proportional to 113,107.78, 156,089.19 and 70,690.51 is: 97,553.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,107.78 : 156,089.19 = 70,690.51 : x
  2. Step 2: Convert to fraction form
    113,107.78/156,089.19 = 70,690.51/x
  3. Step 3: Cross multiply
    113,107.78x = 156,089.19 × 70,690.51
  4. Step 4: Simplify right side
    113,107.78x = 11,034,024,446.59
  5. Step 5: Solve for x
    x = 11,034,024,446.59/113,107.78
  6. Step 6: Final answer
    x = 97,553.19

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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.