Home / 103,619.40-142,994.98-61,180.64

Finding the Fourth Proportional to 103,619.40, 142,994.98 and 61,180.64

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Solution

The fourth proportional to 103,619.40, 142,994.98 and 61,180.64 is: 84,429.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.40 : 142,994.98 = 61,180.64 : x
  2. Step 2: Convert to fraction form
    103,619.40/142,994.98 = 61,180.64/x
  3. Step 3: Cross multiply
    103,619.40x = 142,994.98 × 61,180.64
  4. Step 4: Simplify right side
    103,619.40x = 8,748,524,393.19
  5. Step 5: Solve for x
    x = 8,748,524,393.19/103,619.40
  6. Step 6: Final answer
    x = 84,429.41

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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.