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Finding the Fourth Proportional to 109,316.40, 163,974.60 and 98,602.80

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Solution

The fourth proportional to 109,316.40, 163,974.60 and 98,602.80 is: 147,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,316.40 : 163,974.60 = 98,602.80 : x
  2. Step 2: Convert to fraction form
    109,316.40/163,974.60 = 98,602.80/x
  3. Step 3: Cross multiply
    109,316.40x = 163,974.60 × 98,602.80
  4. Step 4: Simplify right side
    109,316.40x = 16,168,354,688.88
  5. Step 5: Solve for x
    x = 16,168,354,688.88/109,316.40
  6. Step 6: Final answer
    x = 147,904.20

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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.