Home / 130,809.26-180,551.30-77,130.04

Finding the Fourth Proportional to 130,809.26, 180,551.30 and 77,130.04

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Solution

The fourth proportional to 130,809.26, 180,551.30 and 77,130.04 is: 106,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,809.26 : 180,551.30 = 77,130.04 : x
  2. Step 2: Convert to fraction form
    130,809.26/180,551.30 = 77,130.04/x
  3. Step 3: Cross multiply
    130,809.26x = 180,551.30 × 77,130.04
  4. Step 4: Simplify right side
    130,809.26x = 13,925,928,991.05
  5. Step 5: Solve for x
    x = 13,925,928,991.05/130,809.26
  6. Step 6: Final answer
    x = 106,459.81

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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.