Home / 102,705.62-153,992.47-42,775.65

Finding the Fourth Proportional to 102,705.62, 153,992.47 and 42,775.65

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Solution

The fourth proportional to 102,705.62, 153,992.47 and 42,775.65 is: 64,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,705.62 : 153,992.47 = 42,775.65 : x
  2. Step 2: Convert to fraction form
    102,705.62/153,992.47 = 42,775.65/x
  3. Step 3: Cross multiply
    102,705.62x = 153,992.47 × 42,775.65
  4. Step 4: Simplify right side
    102,705.62x = 6,587,127,999.36
  5. Step 5: Solve for x
    x = 6,587,127,999.36/102,705.62
  6. Step 6: Final answer
    x = 64,136.00

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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.