Home / 98,858.88-136,423.98-56,418.12

Finding the Fourth Proportional to 98,858.88, 136,423.98 and 56,418.12

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Solution

The fourth proportional to 98,858.88, 136,423.98 and 56,418.12 is: 77,856.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,858.88 : 136,423.98 = 56,418.12 : x
  2. Step 2: Convert to fraction form
    98,858.88/136,423.98 = 56,418.12/x
  3. Step 3: Cross multiply
    98,858.88x = 136,423.98 × 56,418.12
  4. Step 4: Simplify right side
    98,858.88x = 7,696,784,474.52
  5. Step 5: Solve for x
    x = 7,696,784,474.52/98,858.88
  6. Step 6: Final answer
    x = 77,856.28

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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.