Home / 155,438.56-214,490-87,454.11

Finding the Fourth Proportional to 155,438.56, 214,490 and 87,454.11

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Solution

The fourth proportional to 155,438.56, 214,490 and 87,454.11 is: 120,678.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,438.56 : 214,490 = 87,454.11 : x
  2. Step 2: Convert to fraction form
    155,438.56/214,490 = 87,454.11/x
  3. Step 3: Cross multiply
    155,438.56x = 214,490 × 87,454.11
  4. Step 4: Simplify right side
    155,438.56x = 18,758,032,053.90
  5. Step 5: Solve for x
    x = 18,758,032,053.90/155,438.56
  6. Step 6: Final answer
    x = 120,678.11

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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.