Home / 120,124.02-165,731.53-77,127.60

Finding the Fourth Proportional to 120,124.02, 165,731.53 and 77,127.60

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Solution

The fourth proportional to 120,124.02, 165,731.53 and 77,127.60 is: 106,410.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,124.02 : 165,731.53 = 77,127.60 : x
  2. Step 2: Convert to fraction form
    120,124.02/165,731.53 = 77,127.60/x
  3. Step 3: Cross multiply
    120,124.02x = 165,731.53 × 77,127.60
  4. Step 4: Simplify right side
    120,124.02x = 12,782,474,577.36
  5. Step 5: Solve for x
    x = 12,782,474,577.36/120,124.02
  6. Step 6: Final answer
    x = 106,410.65

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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.