Home / 156,909.84-216,530.28-89,828.88

Finding the Fourth Proportional to 156,909.84, 216,530.28 and 89,828.88

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Solution

The fourth proportional to 156,909.84, 216,530.28 and 89,828.88 is: 123,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,909.84 : 216,530.28 = 89,828.88 : x
  2. Step 2: Convert to fraction form
    156,909.84/216,530.28 = 89,828.88/x
  3. Step 3: Cross multiply
    156,909.84x = 216,530.28 × 89,828.88
  4. Step 4: Simplify right side
    156,909.84x = 19,450,672,538.49
  5. Step 5: Solve for x
    x = 19,450,672,538.49/156,909.84
  6. Step 6: Final answer
    x = 123,960.82

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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.