Home / 143,454.65-214,985.10-90,769.82

Finding the Fourth Proportional to 143,454.65, 214,985.10 and 90,769.82

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Solution

The fourth proportional to 143,454.65, 214,985.10 and 90,769.82 is: 136,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,454.65 : 214,985.10 = 90,769.82 : x
  2. Step 2: Convert to fraction form
    143,454.65/214,985.10 = 90,769.82/x
  3. Step 3: Cross multiply
    143,454.65x = 214,985.10 × 90,769.82
  4. Step 4: Simplify right side
    143,454.65x = 19,514,158,095.14
  5. Step 5: Solve for x
    x = 19,514,158,095.14/143,454.65
  6. Step 6: Final answer
    x = 136,030.16

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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.