Home / 153,747.10-212,085.70-90,072.60

Finding the Fourth Proportional to 153,747.10, 212,085.70 and 90,072.60

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Solution

The fourth proportional to 153,747.10, 212,085.70 and 90,072.60 is: 124,250.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,747.10 : 212,085.70 = 90,072.60 : x
  2. Step 2: Convert to fraction form
    153,747.10/212,085.70 = 90,072.60/x
  3. Step 3: Cross multiply
    153,747.10x = 212,085.70 × 90,072.60
  4. Step 4: Simplify right side
    153,747.10x = 19,103,110,421.82
  5. Step 5: Solve for x
    x = 19,103,110,421.82/153,747.10
  6. Step 6: Final answer
    x = 124,250.22

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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.