Home / 130,899.51-180,636.48-79,997.40

Finding the Fourth Proportional to 130,899.51, 180,636.48 and 79,997.40

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Solution

The fourth proportional to 130,899.51, 180,636.48 and 79,997.40 is: 110,393.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,899.51 : 180,636.48 = 79,997.40 : x
  2. Step 2: Convert to fraction form
    130,899.51/180,636.48 = 79,997.40/x
  3. Step 3: Cross multiply
    130,899.51x = 180,636.48 × 79,997.40
  4. Step 4: Simplify right side
    130,899.51x = 14,450,448,745.15
  5. Step 5: Solve for x
    x = 14,450,448,745.15/130,899.51
  6. Step 6: Final answer
    x = 110,393.45

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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.