Home / 155,130.98-214,083.64-86,226.90

Finding the Fourth Proportional to 155,130.98, 214,083.64 and 86,226.90

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Solution

The fourth proportional to 155,130.98, 214,083.64 and 86,226.90 is: 118,994.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,130.98 : 214,083.64 = 86,226.90 : x
  2. Step 2: Convert to fraction form
    155,130.98/214,083.64 = 86,226.90/x
  3. Step 3: Cross multiply
    155,130.98x = 214,083.64 × 86,226.90
  4. Step 4: Simplify right side
    155,130.98x = 18,459,767,922.89
  5. Step 5: Solve for x
    x = 18,459,767,922.89/155,130.98
  6. Step 6: Final answer
    x = 118,994.72

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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.