Home / 154,848.88-213,678.64-86,856.40

Finding the Fourth Proportional to 154,848.88, 213,678.64 and 86,856.40

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Solution

The fourth proportional to 154,848.88, 213,678.64 and 86,856.40 is: 119,854.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,848.88 : 213,678.64 = 86,856.40 : x
  2. Step 2: Convert to fraction form
    154,848.88/213,678.64 = 86,856.40/x
  3. Step 3: Cross multiply
    154,848.88x = 213,678.64 × 86,856.40
  4. Step 4: Simplify right side
    154,848.88x = 18,559,357,427.30
  5. Step 5: Solve for x
    x = 18,559,357,427.30/154,848.88
  6. Step 6: Final answer
    x = 119,854.64

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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.