Home / 127,639,356.14-176,147,009.81-71,129,180.21

Finding the Fourth Proportional to 127,639,356.14, 176,147,009.81 and 71,129,180.21

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Solution

The fourth proportional to 127,639,356.14, 176,147,009.81 and 71,129,180.21 is: 98,160,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,639,356.14 : 176,147,009.81 = 71,129,180.21 : x
  2. Step 2: Convert to fraction form
    127,639,356.14/176,147,009.81 = 71,129,180.21/x
  3. Step 3: Cross multiply
    127,639,356.14x = 176,147,009.81 × 71,129,180.21
  4. Step 4: Simplify right side
    127,639,356.14x = 12,529,192,403,258,482
  5. Step 5: Solve for x
    x = 12,529,192,403,258,482/127,639,356.14
  6. Step 6: Final answer
    x = 98,160,886.91

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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.