Home / 129,438,990.90-178,624,627.11-70,701,646.50

Finding the Fourth Proportional to 129,438,990.90, 178,624,627.11 and 70,701,646.50

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Solution

The fourth proportional to 129,438,990.90, 178,624,627.11 and 70,701,646.50 is: 97,567,627.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,438,990.90 : 178,624,627.11 = 70,701,646.50 : x
  2. Step 2: Convert to fraction form
    129,438,990.90/178,624,627.11 = 70,701,646.50/x
  3. Step 3: Cross multiply
    129,438,990.90x = 178,624,627.11 × 70,701,646.50
  4. Step 4: Simplify right side
    129,438,990.90x = 12,629,055,242,125,538
  5. Step 5: Solve for x
    x = 12,629,055,242,125,538/129,438,990.90
  6. Step 6: Final answer
    x = 97,567,627.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.