Home / 102,541.40-153,812.10-77,658.20

Finding the Fourth Proportional to 102,541.40, 153,812.10 and 77,658.20

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Solution

The fourth proportional to 102,541.40, 153,812.10 and 77,658.20 is: 116,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,541.40 : 153,812.10 = 77,658.20 : x
  2. Step 2: Convert to fraction form
    102,541.40/153,812.10 = 77,658.20/x
  3. Step 3: Cross multiply
    102,541.40x = 153,812.10 × 77,658.20
  4. Step 4: Simplify right side
    102,541.40x = 11,944,770,824.22
  5. Step 5: Solve for x
    x = 11,944,770,824.22/102,541.40
  6. Step 6: Final answer
    x = 116,487.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.