Home / 153,023.02-211,178.10-85,039.72

Finding the Fourth Proportional to 153,023.02, 211,178.10 and 85,039.72

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Solution

The fourth proportional to 153,023.02, 211,178.10 and 85,039.72 is: 117,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,023.02 : 211,178.10 = 85,039.72 : x
  2. Step 2: Convert to fraction form
    153,023.02/211,178.10 = 85,039.72/x
  3. Step 3: Cross multiply
    153,023.02x = 211,178.10 × 85,039.72
  4. Step 4: Simplify right side
    153,023.02x = 17,958,526,494.13
  5. Step 5: Solve for x
    x = 17,958,526,494.13/153,023.02
  6. Step 6: Final answer
    x = 117,358.33

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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.