Home / 103,352,019.40-155,258,976.30-86,345,907.40

Finding the Fourth Proportional to 103,352,019.40, 155,258,976.30 and 86,345,907.40

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Solution

The fourth proportional to 103,352,019.40, 155,258,976.30 and 86,345,907.40 is: 129,711,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,352,019.40 : 155,258,976.30 = 86,345,907.40 : x
  2. Step 2: Convert to fraction form
    103,352,019.40/155,258,976.30 = 86,345,907.40/x
  3. Step 3: Cross multiply
    103,352,019.40x = 155,258,976.30 × 86,345,907.40
  4. Step 4: Simplify right side
    103,352,019.40x = 13,405,977,190,618,596
  5. Step 5: Solve for x
    x = 13,405,977,190,618,596/103,352,019.40
  6. Step 6: Final answer
    x = 129,711,806.97

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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.