Home / 136,158,435.81-187,872,943.29-81,159,409.89

Finding the Fourth Proportional to 136,158,435.81, 187,872,943.29 and 81,159,409.89

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Solution

The fourth proportional to 136,158,435.81, 187,872,943.29 and 81,159,409.89 is: 111,984,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,158,435.81 : 187,872,943.29 = 81,159,409.89 : x
  2. Step 2: Convert to fraction form
    136,158,435.81/187,872,943.29 = 81,159,409.89/x
  3. Step 3: Cross multiply
    136,158,435.81x = 187,872,943.29 × 81,159,409.89
  4. Step 4: Simplify right side
    136,158,435.81x = 15,247,657,210,368,674
  5. Step 5: Solve for x
    x = 15,247,657,210,368,674/136,158,435.81
  6. Step 6: Final answer
    x = 111,984,667.86

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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.