Home / 125,135.84-172,687.40-68,547.20

Finding the Fourth Proportional to 125,135.84, 172,687.40 and 68,547.20

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Solution

The fourth proportional to 125,135.84, 172,687.40 and 68,547.20 is: 94,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,135.84 : 172,687.40 = 68,547.20 : x
  2. Step 2: Convert to fraction form
    125,135.84/172,687.40 = 68,547.20/x
  3. Step 3: Cross multiply
    125,135.84x = 172,687.40 × 68,547.20
  4. Step 4: Simplify right side
    125,135.84x = 11,837,237,745.28
  5. Step 5: Solve for x
    x = 11,837,237,745.28/125,135.84
  6. Step 6: Final answer
    x = 94,595.10

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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.