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Finding the Fourth Proportional to 108,985.20, 163,477.80 and 56,410.80

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Solution

The fourth proportional to 108,985.20, 163,477.80 and 56,410.80 is: 84,616.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,985.20 : 163,477.80 = 56,410.80 : x
  2. Step 2: Convert to fraction form
    108,985.20/163,477.80 = 56,410.80/x
  3. Step 3: Cross multiply
    108,985.20x = 163,477.80 × 56,410.80
  4. Step 4: Simplify right side
    108,985.20x = 9,221,913,480.24
  5. Step 5: Solve for x
    x = 9,221,913,480.24/108,985.20
  6. Step 6: Final answer
    x = 84,616.20

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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.