Home / 109,066.40-163,405.20-89,237.60

Finding the Fourth Proportional to 109,066.40, 163,405.20 and 89,237.60

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Solution

The fourth proportional to 109,066.40, 163,405.20 and 89,237.60 is: 133,697.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,066.40 : 163,405.20 = 89,237.60 : x
  2. Step 2: Convert to fraction form
    109,066.40/163,405.20 = 89,237.60/x
  3. Step 3: Cross multiply
    109,066.40x = 163,405.20 × 89,237.60
  4. Step 4: Simplify right side
    109,066.40x = 14,581,887,875.52
  5. Step 5: Solve for x
    x = 14,581,887,875.52/109,066.40
  6. Step 6: Final answer
    x = 133,697.34

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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.