Home / 131,779.51-181,856.15-71,350.81

Finding the Fourth Proportional to 131,779.51, 181,856.15 and 71,350.81

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Solution

The fourth proportional to 131,779.51, 181,856.15 and 71,350.81 is: 98,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,779.51 : 181,856.15 = 71,350.81 : x
  2. Step 2: Convert to fraction form
    131,779.51/181,856.15 = 71,350.81/x
  3. Step 3: Cross multiply
    131,779.51x = 181,856.15 × 71,350.81
  4. Step 4: Simplify right side
    131,779.51x = 12,975,583,605.98
  5. Step 5: Solve for x
    x = 12,975,583,605.98/131,779.51
  6. Step 6: Final answer
    x = 98,464.35

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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.