Home / 103,671.12-143,109.48-70,156.56

Finding the Fourth Proportional to 103,671.12, 143,109.48 and 70,156.56

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Solution

The fourth proportional to 103,671.12, 143,109.48 and 70,156.56 is: 96,845.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671.12 : 143,109.48 = 70,156.56 : x
  2. Step 2: Convert to fraction form
    103,671.12/143,109.48 = 70,156.56/x
  3. Step 3: Cross multiply
    103,671.12x = 143,109.48 × 70,156.56
  4. Step 4: Simplify right side
    103,671.12x = 10,040,068,820.19
  5. Step 5: Solve for x
    x = 10,040,068,820.19/103,671.12
  6. Step 6: Final answer
    x = 96,845.38

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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.