Home / 191,150.08-286,835.72-78,809.36

Finding the Fourth Proportional to 191,150.08, 286,835.72 and 78,809.36

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Solution

The fourth proportional to 191,150.08, 286,835.72 and 78,809.36 is: 118,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,150.08 : 286,835.72 = 78,809.36 : x
  2. Step 2: Convert to fraction form
    191,150.08/286,835.72 = 78,809.36/x
  3. Step 3: Cross multiply
    191,150.08x = 286,835.72 × 78,809.36
  4. Step 4: Simplify right side
    191,150.08x = 22,605,339,518.34
  5. Step 5: Solve for x
    x = 22,605,339,518.34/191,150.08
  6. Step 6: Final answer
    x = 118,259.64

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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.