Home / 123,557.17-170,507.05-69,840.30

Finding the Fourth Proportional to 123,557.17, 170,507.05 and 69,840.30

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Solution

The fourth proportional to 123,557.17, 170,507.05 and 69,840.30 is: 96,378.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,557.17 : 170,507.05 = 69,840.30 : x
  2. Step 2: Convert to fraction form
    123,557.17/170,507.05 = 69,840.30/x
  3. Step 3: Cross multiply
    123,557.17x = 170,507.05 × 69,840.30
  4. Step 4: Simplify right side
    123,557.17x = 11,908,263,524.12
  5. Step 5: Solve for x
    x = 11,908,263,524.12/123,557.17
  6. Step 6: Final answer
    x = 96,378.57

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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.