Home / 78,912,373.60-118,049,695.80-68,248,124.20

Finding the Fourth Proportional to 78,912,373.60, 118,049,695.80 and 68,248,124.20

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Solution

The fourth proportional to 78,912,373.60, 118,049,695.80 and 68,248,124.20 is: 102,096,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912,373.60 : 118,049,695.80 = 68,248,124.20 : x
  2. Step 2: Convert to fraction form
    78,912,373.60/118,049,695.80 = 68,248,124.20/x
  3. Step 3: Cross multiply
    78,912,373.60x = 118,049,695.80 × 68,248,124.20
  4. Step 4: Simplify right side
    78,912,373.60x = 8,056,670,300,730,619
  5. Step 5: Solve for x
    x = 8,056,670,300,730,619/78,912,373.60
  6. Step 6: Final answer
    x = 102,096,413.19

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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.