Home / 117,856.17-162,638.40-64,140.05

Finding the Fourth Proportional to 117,856.17, 162,638.40 and 64,140.05

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Solution

The fourth proportional to 117,856.17, 162,638.40 and 64,140.05 is: 88,511.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,856.17 : 162,638.40 = 64,140.05 : x
  2. Step 2: Convert to fraction form
    117,856.17/162,638.40 = 64,140.05/x
  3. Step 3: Cross multiply
    117,856.17x = 162,638.40 × 64,140.05
  4. Step 4: Simplify right side
    117,856.17x = 10,431,634,294.73
  5. Step 5: Solve for x
    x = 10,431,634,294.73/117,856.17
  6. Step 6: Final answer
    x = 88,511.57

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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.