Home / 137,146.32-189,244.74-76,707.12

Finding the Fourth Proportional to 137,146.32, 189,244.74 and 76,707.12

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Solution

The fourth proportional to 137,146.32, 189,244.74 and 76,707.12 is: 105,846.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,146.32 : 189,244.74 = 76,707.12 : x
  2. Step 2: Convert to fraction form
    137,146.32/189,244.74 = 76,707.12/x
  3. Step 3: Cross multiply
    137,146.32x = 189,244.74 × 76,707.12
  4. Step 4: Simplify right side
    137,146.32x = 14,516,418,980.55
  5. Step 5: Solve for x
    x = 14,516,418,980.55/137,146.32
  6. Step 6: Final answer
    x = 105,846.22

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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.