Home / 105,271.26-145,289.15-67,018.58

Finding the Fourth Proportional to 105,271.26, 145,289.15 and 67,018.58

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Solution

The fourth proportional to 105,271.26, 145,289.15 and 67,018.58 is: 92,495.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,271.26 : 145,289.15 = 67,018.58 : x
  2. Step 2: Convert to fraction form
    105,271.26/145,289.15 = 67,018.58/x
  3. Step 3: Cross multiply
    105,271.26x = 145,289.15 × 67,018.58
  4. Step 4: Simplify right side
    105,271.26x = 9,737,071,795.96
  5. Step 5: Solve for x
    x = 9,737,071,795.96/105,271.26
  6. Step 6: Final answer
    x = 92,495.07

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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.