Home / 154,172.34-212,741.51-86,182.16

Finding the Fourth Proportional to 154,172.34, 212,741.51 and 86,182.16

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Solution

The fourth proportional to 154,172.34, 212,741.51 and 86,182.16 is: 118,922.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,172.34 : 212,741.51 = 86,182.16 : x
  2. Step 2: Convert to fraction form
    154,172.34/212,741.51 = 86,182.16/x
  3. Step 3: Cross multiply
    154,172.34x = 212,741.51 × 86,182.16
  4. Step 4: Simplify right side
    154,172.34x = 18,334,521,358.84
  5. Step 5: Solve for x
    x = 18,334,521,358.84/154,172.34
  6. Step 6: Final answer
    x = 118,922.25

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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.