Home / 123,191.46-170,030.61-77,840.64

Finding the Fourth Proportional to 123,191.46, 170,030.61 and 77,840.64

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Solution

The fourth proportional to 123,191.46, 170,030.61 and 77,840.64 is: 107,436.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,191.46 : 170,030.61 = 77,840.64 : x
  2. Step 2: Convert to fraction form
    123,191.46/170,030.61 = 77,840.64/x
  3. Step 3: Cross multiply
    123,191.46x = 170,030.61 × 77,840.64
  4. Step 4: Simplify right side
    123,191.46x = 13,235,291,501.99
  5. Step 5: Solve for x
    x = 13,235,291,501.99/123,191.46
  6. Step 6: Final answer
    x = 107,436.76

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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.