Home / 191,018.38-263,533.80-118,388.10

Finding the Fourth Proportional to 191,018.38, 263,533.80 and 118,388.10

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Solution

The fourth proportional to 191,018.38, 263,533.80 and 118,388.10 is: 163,331.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,018.38 : 263,533.80 = 118,388.10 : x
  2. Step 2: Convert to fraction form
    191,018.38/263,533.80 = 118,388.10/x
  3. Step 3: Cross multiply
    191,018.38x = 263,533.80 × 118,388.10
  4. Step 4: Simplify right side
    191,018.38x = 31,199,265,867.78
  5. Step 5: Solve for x
    x = 31,199,265,867.78/191,018.38
  6. Step 6: Final answer
    x = 163,331.22

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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.