Home / 153,716.09-212,129.40-85,737.38

Finding the Fourth Proportional to 153,716.09, 212,129.40 and 85,737.38

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Solution

The fourth proportional to 153,716.09, 212,129.40 and 85,737.38 is: 118,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,716.09 : 212,129.40 = 85,737.38 : x
  2. Step 2: Convert to fraction form
    153,716.09/212,129.40 = 85,737.38/x
  3. Step 3: Cross multiply
    153,716.09x = 212,129.40 × 85,737.38
  4. Step 4: Simplify right side
    153,716.09x = 18,187,418,976.97
  5. Step 5: Solve for x
    x = 18,187,418,976.97/153,716.09
  6. Step 6: Final answer
    x = 118,318.25

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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.