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Finding the Fourth Proportional to 97,413.20, 146,119.80 and 77,730.20

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Solution

The fourth proportional to 97,413.20, 146,119.80 and 77,730.20 is: 116,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,413.20 : 146,119.80 = 77,730.20 : x
  2. Step 2: Convert to fraction form
    97,413.20/146,119.80 = 77,730.20/x
  3. Step 3: Cross multiply
    97,413.20x = 146,119.80 × 77,730.20
  4. Step 4: Simplify right side
    97,413.20x = 11,357,921,277.96
  5. Step 5: Solve for x
    x = 11,357,921,277.96/97,413.20
  6. Step 6: Final answer
    x = 116,595.30

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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.