Home / 101,420.04-151,398.33-85,691.40

Finding the Fourth Proportional to 101,420.04, 151,398.33 and 85,691.40

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Solution

The fourth proportional to 101,420.04, 151,398.33 and 85,691.40 is: 127,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,420.04 : 151,398.33 = 85,691.40 : x
  2. Step 2: Convert to fraction form
    101,420.04/151,398.33 = 85,691.40/x
  3. Step 3: Cross multiply
    101,420.04x = 151,398.33 × 85,691.40
  4. Step 4: Simplify right side
    101,420.04x = 12,973,534,855.36
  5. Step 5: Solve for x
    x = 12,973,534,855.36/101,420.04
  6. Step 6: Final answer
    x = 127,918.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.