Home / 163,546.70-245,320.05-128,117.30

Finding the Fourth Proportional to 163,546.70, 245,320.05 and 128,117.30

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Solution

The fourth proportional to 163,546.70, 245,320.05 and 128,117.30 is: 192,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,546.70 : 245,320.05 = 128,117.30 : x
  2. Step 2: Convert to fraction form
    163,546.70/245,320.05 = 128,117.30/x
  3. Step 3: Cross multiply
    163,546.70x = 245,320.05 × 128,117.30
  4. Step 4: Simplify right side
    163,546.70x = 31,429,742,441.87
  5. Step 5: Solve for x
    x = 31,429,742,441.87/163,546.70
  6. Step 6: Final answer
    x = 192,175.95

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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.