Home / 161,779.02-223,261.50-90,158.40

Finding the Fourth Proportional to 161,779.02, 223,261.50 and 90,158.40

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Solution

The fourth proportional to 161,779.02, 223,261.50 and 90,158.40 is: 124,422.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,779.02 : 223,261.50 = 90,158.40 : x
  2. Step 2: Convert to fraction form
    161,779.02/223,261.50 = 90,158.40/x
  3. Step 3: Cross multiply
    161,779.02x = 223,261.50 × 90,158.40
  4. Step 4: Simplify right side
    161,779.02x = 20,128,899,621.60
  5. Step 5: Solve for x
    x = 20,128,899,621.60/161,779.02
  6. Step 6: Final answer
    x = 124,422.19

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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.