Home / 125,009.10-172,512.55-68,420.47

Finding the Fourth Proportional to 125,009.10, 172,512.55 and 68,420.47

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Solution

The fourth proportional to 125,009.10, 172,512.55 and 68,420.47 is: 94,420.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,009.10 : 172,512.55 = 68,420.47 : x
  2. Step 2: Convert to fraction form
    125,009.10/172,512.55 = 68,420.47/x
  3. Step 3: Cross multiply
    125,009.10x = 172,512.55 × 68,420.47
  4. Step 4: Simplify right side
    125,009.10x = 11,803,389,751.90
  5. Step 5: Solve for x
    x = 11,803,389,751.90/125,009.10
  6. Step 6: Final answer
    x = 94,420.25

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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.