Home / 130,682.40-180,382.32-103,872.48

Finding the Fourth Proportional to 130,682.40, 180,382.32 and 103,872.48

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Solution

The fourth proportional to 130,682.40, 180,382.32 and 103,872.48 is: 143,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,682.40 : 180,382.32 = 103,872.48 : x
  2. Step 2: Convert to fraction form
    130,682.40/180,382.32 = 103,872.48/x
  3. Step 3: Cross multiply
    130,682.40x = 180,382.32 × 103,872.48
  4. Step 4: Simplify right side
    130,682.40x = 18,736,758,926.55
  5. Step 5: Solve for x
    x = 18,736,758,926.55/130,682.40
  6. Step 6: Final answer
    x = 143,376.30

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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.