Home / 130,474.80-180,052.17-76,763.28

Finding the Fourth Proportional to 130,474.80, 180,052.17 and 76,763.28

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Solution

The fourth proportional to 130,474.80, 180,052.17 and 76,763.28 is: 105,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,474.80 : 180,052.17 = 76,763.28 : x
  2. Step 2: Convert to fraction form
    130,474.80/180,052.17 = 76,763.28/x
  3. Step 3: Cross multiply
    130,474.80x = 180,052.17 × 76,763.28
  4. Step 4: Simplify right side
    130,474.80x = 13,821,395,140.32
  5. Step 5: Solve for x
    x = 13,821,395,140.32/130,474.80
  6. Step 6: Final answer
    x = 105,931.53

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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.