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Finding the Fourth Proportional to 153,790.86, 230,760 and 83,670.06

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Solution

The fourth proportional to 153,790.86, 230,760 and 83,670.06 is: 125,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,790.86 : 230,760 = 83,670.06 : x
  2. Step 2: Convert to fraction form
    153,790.86/230,760 = 83,670.06/x
  3. Step 3: Cross multiply
    153,790.86x = 230,760 × 83,670.06
  4. Step 4: Simplify right side
    153,790.86x = 19,307,703,045.60
  5. Step 5: Solve for x
    x = 19,307,703,045.60/153,790.86
  6. Step 6: Final answer
    x = 125,545.19

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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.