Home / 154,373.64-213,039.48-86,390.12

Finding the Fourth Proportional to 154,373.64, 213,039.48 and 86,390.12

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Solution

The fourth proportional to 154,373.64, 213,039.48 and 86,390.12 is: 119,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,373.64 : 213,039.48 = 86,390.12 : x
  2. Step 2: Convert to fraction form
    154,373.64/213,039.48 = 86,390.12/x
  3. Step 3: Cross multiply
    154,373.64x = 213,039.48 × 86,390.12
  4. Step 4: Simplify right side
    154,373.64x = 18,404,506,241.94
  5. Step 5: Solve for x
    x = 18,404,506,241.94/154,373.64
  6. Step 6: Final answer
    x = 119,220.52

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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.