Home / 137,520.02-189,777.42-77,090.72

Finding the Fourth Proportional to 137,520.02, 189,777.42 and 77,090.72

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Solution

The fourth proportional to 137,520.02, 189,777.42 and 77,090.72 is: 106,385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,520.02 : 189,777.42 = 77,090.72 : x
  2. Step 2: Convert to fraction form
    137,520.02/189,777.42 = 77,090.72/x
  3. Step 3: Cross multiply
    137,520.02x = 189,777.42 × 77,090.72
  4. Step 4: Simplify right side
    137,520.02x = 14,630,077,947.54
  5. Step 5: Solve for x
    x = 14,630,077,947.54/137,520.02
  6. Step 6: Final answer
    x = 106,385.08

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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.