Home / 153,896.04-212,376.74-86,834.28

Finding the Fourth Proportional to 153,896.04, 212,376.74 and 86,834.28

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Solution

The fourth proportional to 153,896.04, 212,376.74 and 86,834.28 is: 119,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,896.04 : 212,376.74 = 86,834.28 : x
  2. Step 2: Convert to fraction form
    153,896.04/212,376.74 = 86,834.28/x
  3. Step 3: Cross multiply
    153,896.04x = 212,376.74 × 86,834.28
  4. Step 4: Simplify right side
    153,896.04x = 18,441,581,306.65
  5. Step 5: Solve for x
    x = 18,441,581,306.65/153,896.04
  6. Step 6: Final answer
    x = 119,831.42

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1.5x scale

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.