Home / 129,069.90-178,118.74-71,714.48

Finding the Fourth Proportional to 129,069.90, 178,118.74 and 71,714.48

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Solution

The fourth proportional to 129,069.90, 178,118.74 and 71,714.48 is: 98,967.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,069.90 : 178,118.74 = 71,714.48 : x
  2. Step 2: Convert to fraction form
    129,069.90/178,118.74 = 71,714.48/x
  3. Step 3: Cross multiply
    129,069.90x = 178,118.74 × 71,714.48
  4. Step 4: Simplify right side
    129,069.90x = 12,773,692,817.36
  5. Step 5: Solve for x
    x = 12,773,692,817.36/129,069.90
  6. Step 6: Final answer
    x = 98,967.25

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1.5x scale

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.