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Finding the Fourth Proportional to 102,519.80, 153,779.70 and 32,420.60

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Solution

The fourth proportional to 102,519.80, 153,779.70 and 32,420.60 is: 48,630.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,519.80 : 153,779.70 = 32,420.60 : x
  2. Step 2: Convert to fraction form
    102,519.80/153,779.70 = 32,420.60/x
  3. Step 3: Cross multiply
    102,519.80x = 153,779.70 × 32,420.60
  4. Step 4: Simplify right side
    102,519.80x = 4,985,630,141.82
  5. Step 5: Solve for x
    x = 4,985,630,141.82/102,519.80
  6. Step 6: Final answer
    x = 48,630.90

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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.