Home / 191,721.60-287,582.40-145,065.60

Finding the Fourth Proportional to 191,721.60, 287,582.40 and 145,065.60

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Solution

The fourth proportional to 191,721.60, 287,582.40 and 145,065.60 is: 217,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.60 : 287,582.40 = 145,065.60 : x
  2. Step 2: Convert to fraction form
    191,721.60/287,582.40 = 145,065.60/x
  3. Step 3: Cross multiply
    191,721.60x = 287,582.40 × 145,065.60
  4. Step 4: Simplify right side
    191,721.60x = 41,718,313,405.44
  5. Step 5: Solve for x
    x = 41,718,313,405.44/191,721.60
  6. Step 6: Final answer
    x = 217,598.40

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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.