Home / 102,090.12-153,135.13-31,012.48

Finding the Fourth Proportional to 102,090.12, 153,135.13 and 31,012.48

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Solution

The fourth proportional to 102,090.12, 153,135.13 and 31,012.48 is: 46,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,090.12 : 153,135.13 = 31,012.48 : x
  2. Step 2: Convert to fraction form
    102,090.12/153,135.13 = 31,012.48/x
  3. Step 3: Cross multiply
    102,090.12x = 153,135.13 × 31,012.48
  4. Step 4: Simplify right side
    102,090.12x = 4,749,100,156.42
  5. Step 5: Solve for x
    x = 4,749,100,156.42/102,090.12
  6. Step 6: Final answer
    x = 46,518.70

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1.5x scale

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.