Home / 157,104.20-235,716.78-72,907.40

Finding the Fourth Proportional to 157,104.20, 235,716.78 and 72,907.40

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Solution

The fourth proportional to 157,104.20, 235,716.78 and 72,907.40 is: 109,389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,104.20 : 235,716.78 = 72,907.40 : x
  2. Step 2: Convert to fraction form
    157,104.20/235,716.78 = 72,907.40/x
  3. Step 3: Cross multiply
    157,104.20x = 235,716.78 × 72,907.40
  4. Step 4: Simplify right side
    157,104.20x = 17,185,497,566.17
  5. Step 5: Solve for x
    x = 17,185,497,566.17/157,104.20
  6. Step 6: Final answer
    x = 109,389.17

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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.