Home / 103,759.08-143,130.96-90,306.60

Finding the Fourth Proportional to 103,759.08, 143,130.96 and 90,306.60

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Solution

The fourth proportional to 103,759.08, 143,130.96 and 90,306.60 is: 124,573.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,759.08 : 143,130.96 = 90,306.60 : x
  2. Step 2: Convert to fraction form
    103,759.08/143,130.96 = 90,306.60/x
  3. Step 3: Cross multiply
    103,759.08x = 143,130.96 × 90,306.60
  4. Step 4: Simplify right side
    103,759.08x = 12,925,670,352.34
  5. Step 5: Solve for x
    x = 12,925,670,352.34/103,759.08
  6. Step 6: Final answer
    x = 124,573.87

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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.