Home / 153,157.42-211,357.36-85,172.90

Finding the Fourth Proportional to 153,157.42, 211,357.36 and 85,172.90

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Solution

The fourth proportional to 153,157.42, 211,357.36 and 85,172.90 is: 117,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,157.42 : 211,357.36 = 85,172.90 : x
  2. Step 2: Convert to fraction form
    153,157.42/211,357.36 = 85,172.90/x
  3. Step 3: Cross multiply
    153,157.42x = 211,357.36 × 85,172.90
  4. Step 4: Simplify right side
    153,157.42x = 18,001,919,287.54
  5. Step 5: Solve for x
    x = 18,001,919,287.54/153,157.42
  6. Step 6: Final answer
    x = 117,538.67

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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.