Home / 112,376.20-168,564.30-72,459.40

Finding the Fourth Proportional to 112,376.20, 168,564.30 and 72,459.40

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Solution

The fourth proportional to 112,376.20, 168,564.30 and 72,459.40 is: 108,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,376.20 : 168,564.30 = 72,459.40 : x
  2. Step 2: Convert to fraction form
    112,376.20/168,564.30 = 72,459.40/x
  3. Step 3: Cross multiply
    112,376.20x = 168,564.30 × 72,459.40
  4. Step 4: Simplify right side
    112,376.20x = 12,214,068,039.42
  5. Step 5: Solve for x
    x = 12,214,068,039.42/112,376.20
  6. Step 6: Final answer
    x = 108,689.10

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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.