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Finding the Fourth Proportional to 112,000.40, 168,130.20 and 64,653.20

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Solution

The fourth proportional to 112,000.40, 168,130.20 and 64,653.20 is: 97,054.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,000.40 : 168,130.20 = 64,653.20 : x
  2. Step 2: Convert to fraction form
    112,000.40/168,130.20 = 64,653.20/x
  3. Step 3: Cross multiply
    112,000.40x = 168,130.20 × 64,653.20
  4. Step 4: Simplify right side
    112,000.40x = 10,870,155,446.64
  5. Step 5: Solve for x
    x = 10,870,155,446.64/112,000.40
  6. Step 6: Final answer
    x = 97,054.61

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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.