Home / 190,501.40-285,752.10-172,130.60

Finding the Fourth Proportional to 190,501.40, 285,752.10 and 172,130.60

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Solution

The fourth proportional to 190,501.40, 285,752.10 and 172,130.60 is: 258,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,501.40 : 285,752.10 = 172,130.60 : x
  2. Step 2: Convert to fraction form
    190,501.40/285,752.10 = 172,130.60/x
  3. Step 3: Cross multiply
    190,501.40x = 285,752.10 × 172,130.60
  4. Step 4: Simplify right side
    190,501.40x = 49,186,680,424.26
  5. Step 5: Solve for x
    x = 49,186,680,424.26/190,501.40
  6. Step 6: Final answer
    x = 258,195.90

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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.