Home / 121,787.28-182,421.36-58,514.40

Finding the Fourth Proportional to 121,787.28, 182,421.36 and 58,514.40

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Solution

The fourth proportional to 121,787.28, 182,421.36 and 58,514.40 is: 87,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,787.28 : 182,421.36 = 58,514.40 : x
  2. Step 2: Convert to fraction form
    121,787.28/182,421.36 = 58,514.40/x
  3. Step 3: Cross multiply
    121,787.28x = 182,421.36 × 58,514.40
  4. Step 4: Simplify right side
    121,787.28x = 10,674,276,427.58
  5. Step 5: Solve for x
    x = 10,674,276,427.58/121,787.28
  6. Step 6: Final answer
    x = 87,646.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.