Home / 139,102,903.20-208,654,354.80-87,370,730.40

Finding the Fourth Proportional to 139,102,903.20, 208,654,354.80 and 87,370,730.40

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Solution

The fourth proportional to 139,102,903.20, 208,654,354.80 and 87,370,730.40 is: 131,056,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,102,903.20 : 208,654,354.80 = 87,370,730.40 : x
  2. Step 2: Convert to fraction form
    139,102,903.20/208,654,354.80 = 87,370,730.40/x
  3. Step 3: Cross multiply
    139,102,903.20x = 208,654,354.80 × 87,370,730.40
  4. Step 4: Simplify right side
    139,102,903.20x = 18,230,283,380,016,748
  5. Step 5: Solve for x
    x = 18,230,283,380,016,748/139,102,903.20
  6. Step 6: Final answer
    x = 131,056,095.60

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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.