Home / 129,117,661.76-178,179,713.88-70,379,818.40

Finding the Fourth Proportional to 129,117,661.76, 178,179,713.88 and 70,379,818.40

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Solution

The fourth proportional to 129,117,661.76, 178,179,713.88 and 70,379,818.40 is: 97,122,699.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,117,661.76 : 178,179,713.88 = 70,379,818.40 : x
  2. Step 2: Convert to fraction form
    129,117,661.76/178,179,713.88 = 70,379,818.40/x
  3. Step 3: Cross multiply
    129,117,661.76x = 178,179,713.88 × 70,379,818.40
  4. Step 4: Simplify right side
    129,117,661.76x = 12,540,255,905,438,360
  5. Step 5: Solve for x
    x = 12,540,255,905,438,360/129,117,661.76
  6. Step 6: Final answer
    x = 97,122,699.83

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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.