Home / 103,355.22-142,637.25-57,420.25

Finding the Fourth Proportional to 103,355.22, 142,637.25 and 57,420.25

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Solution

The fourth proportional to 103,355.22, 142,637.25 and 57,420.25 is: 79,243.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,355.22 : 142,637.25 = 57,420.25 : x
  2. Step 2: Convert to fraction form
    103,355.22/142,637.25 = 57,420.25/x
  3. Step 3: Cross multiply
    103,355.22x = 142,637.25 × 57,420.25
  4. Step 4: Simplify right side
    103,355.22x = 8,190,265,970.22
  5. Step 5: Solve for x
    x = 8,190,265,970.22/103,355.22
  6. Step 6: Final answer
    x = 79,243.85

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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.