Home / 152,990.04-211,132.08-85,012.05

Finding the Fourth Proportional to 152,990.04, 211,132.08 and 85,012.05

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Solution

The fourth proportional to 152,990.04, 211,132.08 and 85,012.05 is: 117,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,990.04 : 211,132.08 = 85,012.05 : x
  2. Step 2: Convert to fraction form
    152,990.04/211,132.08 = 85,012.05/x
  3. Step 3: Cross multiply
    152,990.04x = 211,132.08 × 85,012.05
  4. Step 4: Simplify right side
    152,990.04x = 17,948,770,941.56
  5. Step 5: Solve for x
    x = 17,948,770,941.56/152,990.04
  6. Step 6: Final answer
    x = 117,319.87

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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.