Home / 153,687.50-212,095.23-86,619.50

Finding the Fourth Proportional to 153,687.50, 212,095.23 and 86,619.50

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Solution

The fourth proportional to 153,687.50, 212,095.23 and 86,619.50 is: 119,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,687.50 : 212,095.23 = 86,619.50 : x
  2. Step 2: Convert to fraction form
    153,687.50/212,095.23 = 86,619.50/x
  3. Step 3: Cross multiply
    153,687.50x = 212,095.23 × 86,619.50
  4. Step 4: Simplify right side
    153,687.50x = 18,371,582,774.99
  5. Step 5: Solve for x
    x = 18,371,582,774.99/153,687.50
  6. Step 6: Final answer
    x = 119,538.56

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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.