Home / 191,721.60-287,582.40-107,740.80

Finding the Fourth Proportional to 191,721.60, 287,582.40 and 107,740.80

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Solution

The fourth proportional to 191,721.60, 287,582.40 and 107,740.80 is: 161,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.60 : 287,582.40 = 107,740.80 : x
  2. Step 2: Convert to fraction form
    191,721.60/287,582.40 = 107,740.80/x
  3. Step 3: Cross multiply
    191,721.60x = 287,582.40 × 107,740.80
  4. Step 4: Simplify right side
    191,721.60x = 30,984,357,841.92
  5. Step 5: Solve for x
    x = 30,984,357,841.92/191,721.60
  6. Step 6: Final answer
    x = 161,611.20

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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.