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Finding the Fourth Proportional to 130,380.42, 179,918.74 and 80,069.70

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Solution

The fourth proportional to 130,380.42, 179,918.74 and 80,069.70 is: 110,492.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,380.42 : 179,918.74 = 80,069.70 : x
  2. Step 2: Convert to fraction form
    130,380.42/179,918.74 = 80,069.70/x
  3. Step 3: Cross multiply
    130,380.42x = 179,918.74 × 80,069.70
  4. Step 4: Simplify right side
    130,380.42x = 14,406,039,536.18
  5. Step 5: Solve for x
    x = 14,406,039,536.18/130,380.42
  6. Step 6: Final answer
    x = 110,492.35

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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.