Home / 131,415.13-181,352.85-70,985.78

Finding the Fourth Proportional to 131,415.13, 181,352.85 and 70,985.78

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Solution

The fourth proportional to 131,415.13, 181,352.85 and 70,985.78 is: 97,960.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,415.13 : 181,352.85 = 70,985.78 : x
  2. Step 2: Convert to fraction form
    131,415.13/181,352.85 = 70,985.78/x
  3. Step 3: Cross multiply
    131,415.13x = 181,352.85 × 70,985.78
  4. Step 4: Simplify right side
    131,415.13x = 12,873,473,211.94
  5. Step 5: Solve for x
    x = 12,873,473,211.94/131,415.13
  6. Step 6: Final answer
    x = 97,960.36

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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.