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Finding the Fourth Proportional to 181,896.12, 251,019.32 and 105,420.87

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Solution

The fourth proportional to 181,896.12, 251,019.32 and 105,420.87 is: 145,482.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,896.12 : 251,019.32 = 105,420.87 : x
  2. Step 2: Convert to fraction form
    181,896.12/251,019.32 = 105,420.87/x
  3. Step 3: Cross multiply
    181,896.12x = 251,019.32 × 105,420.87
  4. Step 4: Simplify right side
    181,896.12x = 26,462,674,574.10
  5. Step 5: Solve for x
    x = 26,462,674,574.10/181,896.12
  6. Step 6: Final answer
    x = 145,482.35

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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.