Home / 191,171.07-286,707.40-78,883.20

Finding the Fourth Proportional to 191,171.07, 286,707.40 and 78,883.20

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Solution

The fourth proportional to 191,171.07, 286,707.40 and 78,883.20 is: 118,304.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,171.07 : 286,707.40 = 78,883.20 : x
  2. Step 2: Convert to fraction form
    191,171.07/286,707.40 = 78,883.20/x
  3. Step 3: Cross multiply
    191,171.07x = 286,707.40 × 78,883.20
  4. Step 4: Simplify right side
    191,171.07x = 22,616,396,978.47
  5. Step 5: Solve for x
    x = 22,616,396,978.47/191,171.07
  6. Step 6: Final answer
    x = 118,304.50

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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.