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Finding the Fourth Proportional to 112,886.60, 168,984.30 and 66,000.20

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Solution

The fourth proportional to 112,886.60, 168,984.30 and 66,000.20 is: 98,798.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,886.60 : 168,984.30 = 66,000.20 : x
  2. Step 2: Convert to fraction form
    112,886.60/168,984.30 = 66,000.20/x
  3. Step 3: Cross multiply
    112,886.60x = 168,984.30 × 66,000.20
  4. Step 4: Simplify right side
    112,886.60x = 11,152,997,596.86
  5. Step 5: Solve for x
    x = 11,152,997,596.86/112,886.60
  6. Step 6: Final answer
    x = 98,798.24

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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.