Home / 130,887.23-180,619.35-79,985.11

Finding the Fourth Proportional to 130,887.23, 180,619.35 and 79,985.11

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Solution

The fourth proportional to 130,887.23, 180,619.35 and 79,985.11 is: 110,376.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,887.23 : 180,619.35 = 79,985.11 : x
  2. Step 2: Convert to fraction form
    130,887.23/180,619.35 = 79,985.11/x
  3. Step 3: Cross multiply
    130,887.23x = 180,619.35 × 79,985.11
  4. Step 4: Simplify right side
    130,887.23x = 14,446,858,577.88
  5. Step 5: Solve for x
    x = 14,446,858,577.88/130,887.23
  6. Step 6: Final answer
    x = 110,376.38

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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.