Home / 103,512.74-155,019.95-70,131.60

Finding the Fourth Proportional to 103,512.74, 155,019.95 and 70,131.60

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Solution

The fourth proportional to 103,512.74, 155,019.95 and 70,131.60 is: 105,028.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,512.74 : 155,019.95 = 70,131.60 : x
  2. Step 2: Convert to fraction form
    103,512.74/155,019.95 = 70,131.60/x
  3. Step 3: Cross multiply
    103,512.74x = 155,019.95 × 70,131.60
  4. Step 4: Simplify right side
    103,512.74x = 10,871,796,774.76
  5. Step 5: Solve for x
    x = 10,871,796,774.76/103,512.74
  6. Step 6: Final answer
    x = 105,028.59

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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.