Home / 131,415.07-181,352.87-70,985.72

Finding the Fourth Proportional to 131,415.07, 181,352.87 and 70,985.72

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Solution

The fourth proportional to 131,415.07, 181,352.87 and 70,985.72 is: 97,960.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,415.07 : 181,352.87 = 70,985.72 : x
  2. Step 2: Convert to fraction form
    131,415.07/181,352.87 = 70,985.72/x
  3. Step 3: Cross multiply
    131,415.07x = 181,352.87 × 70,985.72
  4. Step 4: Simplify right side
    131,415.07x = 12,873,463,144.25
  5. Step 5: Solve for x
    x = 12,873,463,144.25/131,415.07
  6. Step 6: Final answer
    x = 97,960.32

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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.