Home / 257,075.03-385,608.42-70,086.53

Finding the Fourth Proportional to 257,075.03, 385,608.42 and 70,086.53

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Solution

The fourth proportional to 257,075.03, 385,608.42 and 70,086.53 is: 105,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,075.03 : 385,608.42 = 70,086.53 : x
  2. Step 2: Convert to fraction form
    257,075.03/385,608.42 = 70,086.53/x
  3. Step 3: Cross multiply
    257,075.03x = 385,608.42 × 70,086.53
  4. Step 4: Simplify right side
    257,075.03x = 27,025,957,060.60
  5. Step 5: Solve for x
    x = 27,025,957,060.60/257,075.03
  6. Step 6: Final answer
    x = 105,128.67

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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.