Home / 163,511.10-245,303.10-128,081.70

Finding the Fourth Proportional to 163,511.10, 245,303.10 and 128,081.70

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Solution

The fourth proportional to 163,511.10, 245,303.10 and 128,081.70 is: 192,151.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,511.10 : 245,303.10 = 128,081.70 : x
  2. Step 2: Convert to fraction form
    163,511.10/245,303.10 = 128,081.70/x
  3. Step 3: Cross multiply
    163,511.10x = 245,303.10 × 128,081.70
  4. Step 4: Simplify right side
    163,511.10x = 31,418,838,063.27
  5. Step 5: Solve for x
    x = 31,418,838,063.27/163,511.10
  6. Step 6: Final answer
    x = 192,151.10

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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.