Home / 121,329.87-167,447.74-72,947.63

Finding the Fourth Proportional to 121,329.87, 167,447.74 and 72,947.63

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Solution

The fourth proportional to 121,329.87, 167,447.74 and 72,947.63 is: 100,675.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,329.87 : 167,447.74 = 72,947.63 : x
  2. Step 2: Convert to fraction form
    121,329.87/167,447.74 = 72,947.63/x
  3. Step 3: Cross multiply
    121,329.87x = 167,447.74 × 72,947.63
  4. Step 4: Simplify right side
    121,329.87x = 12,214,915,126.99
  5. Step 5: Solve for x
    x = 12,214,915,126.99/121,329.87
  6. Step 6: Final answer
    x = 100,675.25

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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.