Home / 102,961.76-142,059.10-70,706.08

Finding the Fourth Proportional to 102,961.76, 142,059.10 and 70,706.08

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Solution

The fourth proportional to 102,961.76, 142,059.10 and 70,706.08 is: 97,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,961.76 : 142,059.10 = 70,706.08 : x
  2. Step 2: Convert to fraction form
    102,961.76/142,059.10 = 70,706.08/x
  3. Step 3: Cross multiply
    102,961.76x = 142,059.10 × 70,706.08
  4. Step 4: Simplify right side
    102,961.76x = 10,044,442,089.33
  5. Step 5: Solve for x
    x = 10,044,442,089.33/102,961.76
  6. Step 6: Final answer
    x = 97,555.07

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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.