Home / 145,369.07-217,855.40-70,339.48

Finding the Fourth Proportional to 145,369.07, 217,855.40 and 70,339.48

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Solution

The fourth proportional to 145,369.07, 217,855.40 and 70,339.48 is: 105,413.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,369.07 : 217,855.40 = 70,339.48 : x
  2. Step 2: Convert to fraction form
    145,369.07/217,855.40 = 70,339.48/x
  3. Step 3: Cross multiply
    145,369.07x = 217,855.40 × 70,339.48
  4. Step 4: Simplify right side
    145,369.07x = 15,323,835,551.19
  5. Step 5: Solve for x
    x = 15,323,835,551.19/145,369.07
  6. Step 6: Final answer
    x = 105,413.31

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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.