Home / 128,755,898.86-177,680,676.98-70,809,146.86

Finding the Fourth Proportional to 128,755,898.86, 177,680,676.98 and 70,809,146.86

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Solution

The fourth proportional to 128,755,898.86, 177,680,676.98 and 70,809,146.86 is: 97,715,267.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,755,898.86 : 177,680,676.98 = 70,809,146.86 : x
  2. Step 2: Convert to fraction form
    128,755,898.86/177,680,676.98 = 70,809,146.86/x
  3. Step 3: Cross multiply
    128,755,898.86x = 177,680,676.98 × 70,809,146.86
  4. Step 4: Simplify right side
    128,755,898.86x = 12,581,417,150,461,040
  5. Step 5: Solve for x
    x = 12,581,417,150,461,040/128,755,898.86
  6. Step 6: Final answer
    x = 97,715,267.90

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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.