Home / 161,778.57-223,254.75-90,157.16

Finding the Fourth Proportional to 161,778.57, 223,254.75 and 90,157.16

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Solution

The fourth proportional to 161,778.57, 223,254.75 and 90,157.16 is: 124,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,778.57 : 223,254.75 = 90,157.16 : x
  2. Step 2: Convert to fraction form
    161,778.57/223,254.75 = 90,157.16/x
  3. Step 3: Cross multiply
    161,778.57x = 223,254.75 × 90,157.16
  4. Step 4: Simplify right side
    161,778.57x = 20,128,013,100.24
  5. Step 5: Solve for x
    x = 20,128,013,100.24/161,778.57
  6. Step 6: Final answer
    x = 124,417.05

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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.