Home / 137,888.10-190,280.46-76,638.09

Finding the Fourth Proportional to 137,888.10, 190,280.46 and 76,638.09

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Solution

The fourth proportional to 137,888.10, 190,280.46 and 76,638.09 is: 105,757.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,888.10 : 190,280.46 = 76,638.09 : x
  2. Step 2: Convert to fraction form
    137,888.10/190,280.46 = 76,638.09/x
  3. Step 3: Cross multiply
    137,888.10x = 190,280.46 × 76,638.09
  4. Step 4: Simplify right side
    137,888.10x = 14,582,731,018.72
  5. Step 5: Solve for x
    x = 14,582,731,018.72/137,888.10
  6. Step 6: Final answer
    x = 105,757.72

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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.