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Finding the Fourth Proportional to 153,938, 230,945.88 and 43,130

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Solution

The fourth proportional to 153,938, 230,945.88 and 43,130 is: 64,705.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,938 : 230,945.88 = 43,130 : x
  2. Step 2: Convert to fraction form
    153,938/230,945.88 = 43,130/x
  3. Step 3: Cross multiply
    153,938x = 230,945.88 × 43,130
  4. Step 4: Simplify right side
    153,938x = 9,960,695,804.40
  5. Step 5: Solve for x
    x = 9,960,695,804.40/153,938
  6. Step 6: Final answer
    x = 64,705.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.