Home / 125,008.40-172,512.60-68,420.24

Finding the Fourth Proportional to 125,008.40, 172,512.60 and 68,420.24

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Solution

The fourth proportional to 125,008.40, 172,512.60 and 68,420.24 is: 94,420.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,008.40 : 172,512.60 = 68,420.24 : x
  2. Step 2: Convert to fraction form
    125,008.40/172,512.60 = 68,420.24/x
  3. Step 3: Cross multiply
    125,008.40x = 172,512.60 × 68,420.24
  4. Step 4: Simplify right side
    125,008.40x = 11,803,353,495.02
  5. Step 5: Solve for x
    x = 11,803,353,495.02/125,008.40
  6. Step 6: Final answer
    x = 94,420.48

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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.