Home / 117,511.81-162,191.87-72,213.55

Finding the Fourth Proportional to 117,511.81, 162,191.87 and 72,213.55

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Solution

The fourth proportional to 117,511.81, 162,191.87 and 72,213.55 is: 99,670.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,511.81 : 162,191.87 = 72,213.55 : x
  2. Step 2: Convert to fraction form
    117,511.81/162,191.87 = 72,213.55/x
  3. Step 3: Cross multiply
    117,511.81x = 162,191.87 × 72,213.55
  4. Step 4: Simplify right side
    117,511.81x = 11,712,450,352.77
  5. Step 5: Solve for x
    x = 11,712,450,352.77/117,511.81
  6. Step 6: Final answer
    x = 99,670.41

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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.