Home / 103,565.80-142,845.06-67,698.28

Finding the Fourth Proportional to 103,565.80, 142,845.06 and 67,698.28

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Solution

The fourth proportional to 103,565.80, 142,845.06 and 67,698.28 is: 93,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,565.80 : 142,845.06 = 67,698.28 : x
  2. Step 2: Convert to fraction form
    103,565.80/142,845.06 = 67,698.28/x
  3. Step 3: Cross multiply
    103,565.80x = 142,845.06 × 67,698.28
  4. Step 4: Simplify right side
    103,565.80x = 9,670,364,868.50
  5. Step 5: Solve for x
    x = 9,670,364,868.50/103,565.80
  6. Step 6: Final answer
    x = 93,374.11

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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.