Home / 128,169,122.44-176,872,632.06-69,432,907.18

Finding the Fourth Proportional to 128,169,122.44, 176,872,632.06 and 69,432,907.18

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Solution

The fourth proportional to 128,169,122.44, 176,872,632.06 and 69,432,907.18 is: 95,817,001.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,169,122.44 : 176,872,632.06 = 69,432,907.18 : x
  2. Step 2: Convert to fraction form
    128,169,122.44/176,872,632.06 = 69,432,907.18/x
  3. Step 3: Cross multiply
    128,169,122.44x = 176,872,632.06 × 69,432,907.18
  4. Step 4: Simplify right side
    128,169,122.44x = 12,280,781,044,504,274
  5. Step 5: Solve for x
    x = 12,280,781,044,504,274/128,169,122.44
  6. Step 6: Final answer
    x = 95,817,001.87

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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.