Home / 137,417.21-189,631.17-76,160.79

Finding the Fourth Proportional to 137,417.21, 189,631.17 and 76,160.79

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Solution

The fourth proportional to 137,417.21, 189,631.17 and 76,160.79 is: 105,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,417.21 : 189,631.17 = 76,160.79 : x
  2. Step 2: Convert to fraction form
    137,417.21/189,631.17 = 76,160.79/x
  3. Step 3: Cross multiply
    137,417.21x = 189,631.17 × 76,160.79
  4. Step 4: Simplify right side
    137,417.21x = 14,442,459,715.82
  5. Step 5: Solve for x
    x = 14,442,459,715.82/137,417.21
  6. Step 6: Final answer
    x = 105,099.35

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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.