Home / 137,041.10-189,118.12-76,615.10

Finding the Fourth Proportional to 137,041.10, 189,118.12 and 76,615.10

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Solution

The fourth proportional to 137,041.10, 189,118.12 and 76,615.10 is: 105,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,041.10 : 189,118.12 = 76,615.10 : x
  2. Step 2: Convert to fraction form
    137,041.10/189,118.12 = 76,615.10/x
  3. Step 3: Cross multiply
    137,041.10x = 189,118.12 × 76,615.10
  4. Step 4: Simplify right side
    137,041.10x = 14,489,302,730.02
  5. Step 5: Solve for x
    x = 14,489,302,730.02/137,041.10
  6. Step 6: Final answer
    x = 105,729.62

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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.