Home / 102,638.22-141,639.42-57,316.98

Finding the Fourth Proportional to 102,638.22, 141,639.42 and 57,316.98

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Solution

The fourth proportional to 102,638.22, 141,639.42 and 57,316.98 is: 79,096.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,638.22 : 141,639.42 = 57,316.98 : x
  2. Step 2: Convert to fraction form
    102,638.22/141,639.42 = 57,316.98/x
  3. Step 3: Cross multiply
    102,638.22x = 141,639.42 × 57,316.98
  4. Step 4: Simplify right side
    102,638.22x = 8,118,343,803.35
  5. Step 5: Solve for x
    x = 8,118,343,803.35/102,638.22
  6. Step 6: Final answer
    x = 79,096.69

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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.