Home / 130,427.07-179,980.71-72,279.90

Finding the Fourth Proportional to 130,427.07, 179,980.71 and 72,279.90

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Solution

The fourth proportional to 130,427.07, 179,980.71 and 72,279.90 is: 99,741.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,427.07 : 179,980.71 = 72,279.90 : x
  2. Step 2: Convert to fraction form
    130,427.07/179,980.71 = 72,279.90/x
  3. Step 3: Cross multiply
    130,427.07x = 179,980.71 × 72,279.90
  4. Step 4: Simplify right side
    130,427.07x = 13,008,987,720.73
  5. Step 5: Solve for x
    x = 13,008,987,720.73/130,427.07
  6. Step 6: Final answer
    x = 99,741.47

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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.