Home / 120,779.01-181,073.19-76,312.05

Finding the Fourth Proportional to 120,779.01, 181,073.19 and 76,312.05

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Solution

The fourth proportional to 120,779.01, 181,073.19 and 76,312.05 is: 114,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,779.01 : 181,073.19 = 76,312.05 : x
  2. Step 2: Convert to fraction form
    120,779.01/181,073.19 = 76,312.05/x
  3. Step 3: Cross multiply
    120,779.01x = 181,073.19 × 76,312.05
  4. Step 4: Simplify right side
    120,779.01x = 13,818,066,328.94
  5. Step 5: Solve for x
    x = 13,818,066,328.94/120,779.01
  6. Step 6: Final answer
    x = 114,407.85

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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.