Home / 126,728.35-190,085.23-42,485.11

Finding the Fourth Proportional to 126,728.35, 190,085.23 and 42,485.11

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Solution

The fourth proportional to 126,728.35, 190,085.23 and 42,485.11 is: 63,725.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.35 : 190,085.23 = 42,485.11 : x
  2. Step 2: Convert to fraction form
    126,728.35/190,085.23 = 42,485.11/x
  3. Step 3: Cross multiply
    126,728.35x = 190,085.23 × 42,485.11
  4. Step 4: Simplify right side
    126,728.35x = 8,075,791,483.82
  5. Step 5: Solve for x
    x = 8,075,791,483.82/126,728.35
  6. Step 6: Final answer
    x = 63,725.22

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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.