Home / 128,042,907.38-176,699,220.82-70,096,155.38

Finding the Fourth Proportional to 128,042,907.38, 176,699,220.82 and 70,096,155.38

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Solution

The fourth proportional to 128,042,907.38, 176,699,220.82 and 70,096,155.38 is: 96,732,699.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,042,907.38 : 176,699,220.82 = 70,096,155.38 : x
  2. Step 2: Convert to fraction form
    128,042,907.38/176,699,220.82 = 70,096,155.38/x
  3. Step 3: Cross multiply
    128,042,907.38x = 176,699,220.82 × 70,096,155.38
  4. Step 4: Simplify right side
    128,042,907.38x = 12,385,936,038,123,650
  5. Step 5: Solve for x
    x = 12,385,936,038,123,650/128,042,907.38
  6. Step 6: Final answer
    x = 96,732,699.15

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1.5x scale

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.