Home / 103,683.86-155,520.30-51,075.57

Finding the Fourth Proportional to 103,683.86, 155,520.30 and 51,075.57

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Solution

The fourth proportional to 103,683.86, 155,520.30 and 51,075.57 is: 76,610.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,683.86 : 155,520.30 = 51,075.57 : x
  2. Step 2: Convert to fraction form
    103,683.86/155,520.30 = 51,075.57/x
  3. Step 3: Cross multiply
    103,683.86x = 155,520.30 × 51,075.57
  4. Step 4: Simplify right side
    103,683.86x = 7,943,287,969.07
  5. Step 5: Solve for x
    x = 7,943,287,969.07/103,683.86
  6. Step 6: Final answer
    x = 76,610.65

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1.5x scale

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.