Home / 130,675.49-180,395.53-87,639.24

Finding the Fourth Proportional to 130,675.49, 180,395.53 and 87,639.24

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Solution

The fourth proportional to 130,675.49, 180,395.53 and 87,639.24 is: 120,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,675.49 : 180,395.53 = 87,639.24 : x
  2. Step 2: Convert to fraction form
    130,675.49/180,395.53 = 87,639.24/x
  3. Step 3: Cross multiply
    130,675.49x = 180,395.53 × 87,639.24
  4. Step 4: Simplify right side
    130,675.49x = 15,809,726,253.02
  5. Step 5: Solve for x
    x = 15,809,726,253.02/130,675.49
  6. Step 6: Final answer
    x = 120,984.63

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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.