Home / 130,768.72-180,455.52-74,178.88

Finding the Fourth Proportional to 130,768.72, 180,455.52 and 74,178.88

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Solution

The fourth proportional to 130,768.72, 180,455.52 and 74,178.88 is: 102,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,768.72 : 180,455.52 = 74,178.88 : x
  2. Step 2: Convert to fraction form
    130,768.72/180,455.52 = 74,178.88/x
  3. Step 3: Cross multiply
    130,768.72x = 180,455.52 × 74,178.88
  4. Step 4: Simplify right side
    130,768.72x = 13,385,988,363.42
  5. Step 5: Solve for x
    x = 13,385,988,363.42/130,768.72
  6. Step 6: Final answer
    x = 102,363.84

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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.