Home / 148,985.20-223,477.80-85,999.60

Finding the Fourth Proportional to 148,985.20, 223,477.80 and 85,999.60

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Solution

The fourth proportional to 148,985.20, 223,477.80 and 85,999.60 is: 128,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,985.20 : 223,477.80 = 85,999.60 : x
  2. Step 2: Convert to fraction form
    148,985.20/223,477.80 = 85,999.60/x
  3. Step 3: Cross multiply
    148,985.20x = 223,477.80 × 85,999.60
  4. Step 4: Simplify right side
    148,985.20x = 19,219,001,408.88
  5. Step 5: Solve for x
    x = 19,219,001,408.88/148,985.20
  6. Step 6: Final answer
    x = 128,999.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.