Home / 125,193.90-172,673.17-86,953.40

Finding the Fourth Proportional to 125,193.90, 172,673.17 and 86,953.40

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Solution

The fourth proportional to 125,193.90, 172,673.17 and 86,953.40 is: 119,930.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,193.90 : 172,673.17 = 86,953.40 : x
  2. Step 2: Convert to fraction form
    125,193.90/172,673.17 = 86,953.40/x
  3. Step 3: Cross multiply
    125,193.90x = 172,673.17 × 86,953.40
  4. Step 4: Simplify right side
    125,193.90x = 15,014,518,787.05
  5. Step 5: Solve for x
    x = 15,014,518,787.05/125,193.90
  6. Step 6: Final answer
    x = 119,930.11

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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.