Home / 130,497.12-180,160.64-85,914.72

Finding the Fourth Proportional to 130,497.12, 180,160.64 and 85,914.72

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Solution

The fourth proportional to 130,497.12, 180,160.64 and 85,914.72 is: 118,611.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,497.12 : 180,160.64 = 85,914.72 : x
  2. Step 2: Convert to fraction form
    130,497.12/180,160.64 = 85,914.72/x
  3. Step 3: Cross multiply
    130,497.12x = 180,160.64 × 85,914.72
  4. Step 4: Simplify right side
    130,497.12x = 15,478,450,940.62
  5. Step 5: Solve for x
    x = 15,478,450,940.62/130,497.12
  6. Step 6: Final answer
    x = 118,611.44

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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.