Home / 145,546.37-217,913.13-78,746.88

Finding the Fourth Proportional to 145,546.37, 217,913.13 and 78,746.88

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Solution

The fourth proportional to 145,546.37, 217,913.13 and 78,746.88 is: 117,900.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,546.37 : 217,913.13 = 78,746.88 : x
  2. Step 2: Convert to fraction form
    145,546.37/217,913.13 = 78,746.88/x
  3. Step 3: Cross multiply
    145,546.37x = 217,913.13 × 78,746.88
  4. Step 4: Simplify right side
    145,546.37x = 17,159,979,098.53
  5. Step 5: Solve for x
    x = 17,159,979,098.53/145,546.37
  6. Step 6: Final answer
    x = 117,900.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.