Home / 131,400.69-181,119.96-102,670.13

Finding the Fourth Proportional to 131,400.69, 181,119.96 and 102,670.13

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Solution

The fourth proportional to 131,400.69, 181,119.96 and 102,670.13 is: 141,518.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,400.69 : 181,119.96 = 102,670.13 : x
  2. Step 2: Convert to fraction form
    131,400.69/181,119.96 = 102,670.13/x
  3. Step 3: Cross multiply
    131,400.69x = 181,119.96 × 102,670.13
  4. Step 4: Simplify right side
    131,400.69x = 18,595,608,933.20
  5. Step 5: Solve for x
    x = 18,595,608,933.20/131,400.69
  6. Step 6: Final answer
    x = 141,518.35

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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.