Home / 78,894,456.40-118,341,684.60-75,871,147.60

Finding the Fourth Proportional to 78,894,456.40, 118,341,684.60 and 75,871,147.60

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Solution

The fourth proportional to 78,894,456.40, 118,341,684.60 and 75,871,147.60 is: 113,806,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,456.40 : 118,341,684.60 = 75,871,147.60 : x
  2. Step 2: Convert to fraction form
    78,894,456.40/118,341,684.60 = 75,871,147.60/x
  3. Step 3: Cross multiply
    78,894,456.40x = 118,341,684.60 × 75,871,147.60
  4. Step 4: Simplify right side
    78,894,456.40x = 8,978,719,419,519,246
  5. Step 5: Solve for x
    x = 8,978,719,419,519,246/78,894,456.40
  6. Step 6: Final answer
    x = 113,806,721.40

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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.