Home / 145,100.06-200,328.10-99,761.12

Finding the Fourth Proportional to 145,100.06, 200,328.10 and 99,761.12

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Solution

The fourth proportional to 145,100.06, 200,328.10 and 99,761.12 is: 137,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,100.06 : 200,328.10 = 99,761.12 : x
  2. Step 2: Convert to fraction form
    145,100.06/200,328.10 = 99,761.12/x
  3. Step 3: Cross multiply
    145,100.06x = 200,328.10 × 99,761.12
  4. Step 4: Simplify right side
    145,100.06x = 19,984,955,623.47
  5. Step 5: Solve for x
    x = 19,984,955,623.47/145,100.06
  6. Step 6: Final answer
    x = 137,732.24

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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.