Home / 109,148.08-163,785-45,963.28

Finding the Fourth Proportional to 109,148.08, 163,785 and 45,963.28

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Solution

The fourth proportional to 109,148.08, 163,785 and 45,963.28 is: 68,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,148.08 : 163,785 = 45,963.28 : x
  2. Step 2: Convert to fraction form
    109,148.08/163,785 = 45,963.28/x
  3. Step 3: Cross multiply
    109,148.08x = 163,785 × 45,963.28
  4. Step 4: Simplify right side
    109,148.08x = 7,528,095,814.80
  5. Step 5: Solve for x
    x = 7,528,095,814.80/109,148.08
  6. Step 6: Final answer
    x = 68,971.40

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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.