Home / 120,780.43-181,075.35-76,313.45

Finding the Fourth Proportional to 120,780.43, 181,075.35 and 76,313.45

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Solution

The fourth proportional to 120,780.43, 181,075.35 and 76,313.45 is: 114,409.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,780.43 : 181,075.35 = 76,313.45 : x
  2. Step 2: Convert to fraction form
    120,780.43/181,075.35 = 76,313.45/x
  3. Step 3: Cross multiply
    120,780.43x = 181,075.35 × 76,313.45
  4. Step 4: Simplify right side
    120,780.43x = 13,818,485,407.32
  5. Step 5: Solve for x
    x = 13,818,485,407.32/120,780.43
  6. Step 6: Final answer
    x = 114,409.97

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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.