Home / 113,315,413.60-169,973,120.40-78,878,036.80

Finding the Fourth Proportional to 113,315,413.60, 169,973,120.40 and 78,878,036.80

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Solution

The fourth proportional to 113,315,413.60, 169,973,120.40 and 78,878,036.80 is: 118,317,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,315,413.60 : 169,973,120.40 = 78,878,036.80 : x
  2. Step 2: Convert to fraction form
    113,315,413.60/169,973,120.40 = 78,878,036.80/x
  3. Step 3: Cross multiply
    113,315,413.60x = 169,973,120.40 × 78,878,036.80
  4. Step 4: Simplify right side
    113,315,413.60x = 13,407,146,045,922,030
  5. Step 5: Solve for x
    x = 13,407,146,045,922,030/113,315,413.60
  6. Step 6: Final answer
    x = 118,317,055.20

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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.