Home / 130,643.14-180,271.38-79,637.44

Finding the Fourth Proportional to 130,643.14, 180,271.38 and 79,637.44

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Solution

The fourth proportional to 130,643.14, 180,271.38 and 79,637.44 is: 109,889.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,643.14 : 180,271.38 = 79,637.44 : x
  2. Step 2: Convert to fraction form
    130,643.14/180,271.38 = 79,637.44/x
  3. Step 3: Cross multiply
    130,643.14x = 180,271.38 × 79,637.44
  4. Step 4: Simplify right side
    130,643.14x = 14,356,351,208.47
  5. Step 5: Solve for x
    x = 14,356,351,208.47/130,643.14
  6. Step 6: Final answer
    x = 109,889.82

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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.