Home / 191,685,364.20-287,528,046.30-76,752,390.60

Finding the Fourth Proportional to 191,685,364.20, 287,528,046.30 and 76,752,390.60

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Solution

The fourth proportional to 191,685,364.20, 287,528,046.30 and 76,752,390.60 is: 115,128,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,685,364.20 : 287,528,046.30 = 76,752,390.60 : x
  2. Step 2: Convert to fraction form
    191,685,364.20/287,528,046.30 = 76,752,390.60/x
  3. Step 3: Cross multiply
    191,685,364.20x = 287,528,046.30 × 76,752,390.60
  4. Step 4: Simplify right side
    191,685,364.20x = 22,068,464,918,072,484
  5. Step 5: Solve for x
    x = 22,068,464,918,072,484/191,685,364.20
  6. Step 6: Final answer
    x = 115,128,585.90

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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.