Home / 98,918.79-136,555.23-56,469.12

Finding the Fourth Proportional to 98,918.79, 136,555.23 and 56,469.12

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Solution

The fourth proportional to 98,918.79, 136,555.23 and 56,469.12 is: 77,954.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,918.79 : 136,555.23 = 56,469.12 : x
  2. Step 2: Convert to fraction form
    98,918.79/136,555.23 = 56,469.12/x
  3. Step 3: Cross multiply
    98,918.79x = 136,555.23 × 56,469.12
  4. Step 4: Simplify right side
    98,918.79x = 7,711,153,669.50
  5. Step 5: Solve for x
    x = 7,711,153,669.50/98,918.79
  6. Step 6: Final answer
    x = 77,954.39

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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.