Home / 191,157.57-286,771.05-78,775.34

Finding the Fourth Proportional to 191,157.57, 286,771.05 and 78,775.34

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Solution

The fourth proportional to 191,157.57, 286,771.05 and 78,775.34 is: 118,177.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,157.57 : 286,771.05 = 78,775.34 : x
  2. Step 2: Convert to fraction form
    191,157.57/286,771.05 = 78,775.34/x
  3. Step 3: Cross multiply
    191,157.57x = 286,771.05 × 78,775.34
  4. Step 4: Simplify right side
    191,157.57x = 22,590,485,532.05
  5. Step 5: Solve for x
    x = 22,590,485,532.05/191,157.57
  6. Step 6: Final answer
    x = 118,177.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.