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Finding the Fourth Proportional to 109,335.60, 163,954.80 and 42,753.60

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Solution

The fourth proportional to 109,335.60, 163,954.80 and 42,753.60 is: 64,111.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,335.60 : 163,954.80 = 42,753.60 : x
  2. Step 2: Convert to fraction form
    109,335.60/163,954.80 = 42,753.60/x
  3. Step 3: Cross multiply
    109,335.60x = 163,954.80 × 42,753.60
  4. Step 4: Simplify right side
    109,335.60x = 7,009,657,937.28
  5. Step 5: Solve for x
    x = 7,009,657,937.28/109,335.60
  6. Step 6: Final answer
    x = 64,111.40

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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.