Home / 107,689.03-148,741.45-78,967.24

Finding the Fourth Proportional to 107,689.03, 148,741.45 and 78,967.24

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Solution

The fourth proportional to 107,689.03, 148,741.45 and 78,967.24 is: 109,070.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,689.03 : 148,741.45 = 78,967.24 : x
  2. Step 2: Convert to fraction form
    107,689.03/148,741.45 = 78,967.24/x
  3. Step 3: Cross multiply
    107,689.03x = 148,741.45 × 78,967.24
  4. Step 4: Simplify right side
    107,689.03x = 11,745,701,210.83
  5. Step 5: Solve for x
    x = 11,745,701,210.83/107,689.03
  6. Step 6: Final answer
    x = 109,070.55

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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.