Home / 153,838.07-212,287.67-85,849.71

Finding the Fourth Proportional to 153,838.07, 212,287.67 and 85,849.71

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Solution

The fourth proportional to 153,838.07, 212,287.67 and 85,849.71 is: 118,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,838.07 : 212,287.67 = 85,849.71 : x
  2. Step 2: Convert to fraction form
    153,838.07/212,287.67 = 85,849.71/x
  3. Step 3: Cross multiply
    153,838.07x = 212,287.67 × 85,849.71
  4. Step 4: Simplify right side
    153,838.07x = 18,224,834,906.08
  5. Step 5: Solve for x
    x = 18,224,834,906.08/153,838.07
  6. Step 6: Final answer
    x = 118,467.65

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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.