Home / 153,960.13-212,452.86-85,971.79

Finding the Fourth Proportional to 153,960.13, 212,452.86 and 85,971.79

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Solution

The fourth proportional to 153,960.13, 212,452.86 and 85,971.79 is: 118,634.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,960.13 : 212,452.86 = 85,971.79 : x
  2. Step 2: Convert to fraction form
    153,960.13/212,452.86 = 85,971.79/x
  3. Step 3: Cross multiply
    153,960.13x = 212,452.86 × 85,971.79
  4. Step 4: Simplify right side
    153,960.13x = 18,264,952,664.82
  5. Step 5: Solve for x
    x = 18,264,952,664.82/153,960.13
  6. Step 6: Final answer
    x = 118,634.30

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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.