Home / 137,445.40-189,766.02-105,557.32

Finding the Fourth Proportional to 137,445.40, 189,766.02 and 105,557.32

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Solution

The fourth proportional to 137,445.40, 189,766.02 and 105,557.32 is: 145,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,445.40 : 189,766.02 = 105,557.32 : x
  2. Step 2: Convert to fraction form
    137,445.40/189,766.02 = 105,557.32/x
  3. Step 3: Cross multiply
    137,445.40x = 189,766.02 × 105,557.32
  4. Step 4: Simplify right side
    137,445.40x = 20,031,192,498.27
  5. Step 5: Solve for x
    x = 20,031,192,498.27/137,445.40
  6. Step 6: Final answer
    x = 145,739.27

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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.