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Finding the Fourth Proportional to 163,931.80, 245,751.90 and 97,301.20

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Solution

The fourth proportional to 163,931.80, 245,751.90 and 97,301.20 is: 145,865.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,931.80 : 245,751.90 = 97,301.20 : x
  2. Step 2: Convert to fraction form
    163,931.80/245,751.90 = 97,301.20/x
  3. Step 3: Cross multiply
    163,931.80x = 245,751.90 × 97,301.20
  4. Step 4: Simplify right side
    163,931.80x = 23,911,954,772.28
  5. Step 5: Solve for x
    x = 23,911,954,772.28/163,931.80
  6. Step 6: Final answer
    x = 145,865.26

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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.