Home / 207,731,071.52-311,624,955.84-86,534,180

Finding the Fourth Proportional to 207,731,071.52, 311,624,955.84 and 86,534,180

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Solution

The fourth proportional to 207,731,071.52, 311,624,955.84 and 86,534,180 is: 129,813,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,731,071.52 : 311,624,955.84 = 86,534,180 : x
  2. Step 2: Convert to fraction form
    207,731,071.52/311,624,955.84 = 86,534,180/x
  3. Step 3: Cross multiply
    207,731,071.52x = 311,624,955.84 × 86,534,180
  4. Step 4: Simplify right side
    207,731,071.52x = 26,966,210,021,150,608
  5. Step 5: Solve for x
    x = 26,966,210,021,150,608/207,731,071.52
  6. Step 6: Final answer
    x = 129,813,079.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.