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Finding the Fourth Proportional to 112,065.90, 167,904.45 and 72,602.70

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Solution

The fourth proportional to 112,065.90, 167,904.45 and 72,602.70 is: 108,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,065.90 : 167,904.45 = 72,602.70 : x
  2. Step 2: Convert to fraction form
    112,065.90/167,904.45 = 72,602.70/x
  3. Step 3: Cross multiply
    112,065.90x = 167,904.45 × 72,602.70
  4. Step 4: Simplify right side
    112,065.90x = 12,190,316,412.02
  5. Step 5: Solve for x
    x = 12,190,316,412.02/112,065.90
  6. Step 6: Final answer
    x = 108,778.11

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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.