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Finding the Fourth Proportional to 175,639, 242,315.66 and 115,242.98

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Solution

The fourth proportional to 175,639, 242,315.66 and 115,242.98 is: 158,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,639 : 242,315.66 = 115,242.98 : x
  2. Step 2: Convert to fraction form
    175,639/242,315.66 = 115,242.98/x
  3. Step 3: Cross multiply
    175,639x = 242,315.66 × 115,242.98
  4. Step 4: Simplify right side
    175,639x = 27,925,178,759.07
  5. Step 5: Solve for x
    x = 27,925,178,759.07/175,639
  6. Step 6: Final answer
    x = 158,991.90

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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.