Home / 191,416.08-287,124.16-86,112

Finding the Fourth Proportional to 191,416.08, 287,124.16 and 86,112

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Solution

The fourth proportional to 191,416.08, 287,124.16 and 86,112 is: 129,168.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,416.08 : 287,124.16 = 86,112 : x
  2. Step 2: Convert to fraction form
    191,416.08/287,124.16 = 86,112/x
  3. Step 3: Cross multiply
    191,416.08x = 287,124.16 × 86,112
  4. Step 4: Simplify right side
    191,416.08x = 24,724,835,665.92
  5. Step 5: Solve for x
    x = 24,724,835,665.92/191,416.08
  6. Step 6: Final answer
    x = 129,168.02

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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.