Home / 128,122,354.61-176,807,968.97-69,383,675.57

Finding the Fourth Proportional to 128,122,354.61, 176,807,968.97 and 69,383,675.57

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Solution

The fourth proportional to 128,122,354.61, 176,807,968.97 and 69,383,675.57 is: 95,748,995.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,354.61 : 176,807,968.97 = 69,383,675.57 : x
  2. Step 2: Convert to fraction form
    128,122,354.61/176,807,968.97 = 69,383,675.57/x
  3. Step 3: Cross multiply
    128,122,354.61x = 176,807,968.97 × 69,383,675.57
  4. Step 4: Simplify right side
    128,122,354.61x = 12,267,586,755,974,148
  5. Step 5: Solve for x
    x = 12,267,586,755,974,148/128,122,354.61
  6. Step 6: Final answer
    x = 95,748,995.51

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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.