Home / 98,858.07-136,435.19-56,423.79

Finding the Fourth Proportional to 98,858.07, 136,435.19 and 56,423.79

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Solution

The fourth proportional to 98,858.07, 136,435.19 and 56,423.79 is: 77,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,858.07 : 136,435.19 = 56,423.79 : x
  2. Step 2: Convert to fraction form
    98,858.07/136,435.19 = 56,423.79/x
  3. Step 3: Cross multiply
    98,858.07x = 136,435.19 × 56,423.79
  4. Step 4: Simplify right side
    98,858.07x = 7,698,190,227.05
  5. Step 5: Solve for x
    x = 7,698,190,227.05/98,858.07
  6. Step 6: Final answer
    x = 77,871.14

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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.