Home / 115,271.36-172,858.08-45,139.52

Finding the Fourth Proportional to 115,271.36, 172,858.08 and 45,139.52

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Solution

The fourth proportional to 115,271.36, 172,858.08 and 45,139.52 is: 67,690.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,271.36 : 172,858.08 = 45,139.52 : x
  2. Step 2: Convert to fraction form
    115,271.36/172,858.08 = 45,139.52/x
  3. Step 3: Cross multiply
    115,271.36x = 172,858.08 × 45,139.52
  4. Step 4: Simplify right side
    115,271.36x = 7,802,730,759.32
  5. Step 5: Solve for x
    x = 7,802,730,759.32/115,271.36
  6. Step 6: Final answer
    x = 67,690.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.