Home / 125,009.97-172,513.76-68,421.34

Finding the Fourth Proportional to 125,009.97, 172,513.76 and 68,421.34

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Solution

The fourth proportional to 125,009.97, 172,513.76 and 68,421.34 is: 94,421.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,009.97 : 172,513.76 = 68,421.34 : x
  2. Step 2: Convert to fraction form
    125,009.97/172,513.76 = 68,421.34/x
  3. Step 3: Cross multiply
    125,009.97x = 172,513.76 × 68,421.34
  4. Step 4: Simplify right side
    125,009.97x = 11,803,622,627.64
  5. Step 5: Solve for x
    x = 11,803,622,627.64/125,009.97
  6. Step 6: Final answer
    x = 94,421.45

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1.5x scale

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.