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Finding the Fourth Proportional to 120,985.60, 181,478.40 and 37,879.68

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Solution

The fourth proportional to 120,985.60, 181,478.40 and 37,879.68 is: 56,819.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,985.60 : 181,478.40 = 37,879.68 : x
  2. Step 2: Convert to fraction form
    120,985.60/181,478.40 = 37,879.68/x
  3. Step 3: Cross multiply
    120,985.60x = 181,478.40 × 37,879.68
  4. Step 4: Simplify right side
    120,985.60x = 6,874,343,718.91
  5. Step 5: Solve for x
    x = 6,874,343,718.91/120,985.60
  6. Step 6: Final answer
    x = 56,819.52

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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.