Home / 103,513.74-155,021.44-70,132.60

Finding the Fourth Proportional to 103,513.74, 155,021.44 and 70,132.60

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Solution

The fourth proportional to 103,513.74, 155,021.44 and 70,132.60 is: 105,030.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,513.74 : 155,021.44 = 70,132.60 : x
  2. Step 2: Convert to fraction form
    103,513.74/155,021.44 = 70,132.60/x
  3. Step 3: Cross multiply
    103,513.74x = 155,021.44 × 70,132.60
  4. Step 4: Simplify right side
    103,513.74x = 10,872,056,642.94
  5. Step 5: Solve for x
    x = 10,872,056,642.94/103,513.74
  6. Step 6: Final answer
    x = 105,030.08

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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.