Home / 138,745,093.76-208,246,710.72-70,638,730.88

Finding the Fourth Proportional to 138,745,093.76, 208,246,710.72 and 70,638,730.88

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Solution

The fourth proportional to 138,745,093.76, 208,246,710.72 and 70,638,730.88 is: 106,023,809.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,745,093.76 : 208,246,710.72 = 70,638,730.88 : x
  2. Step 2: Convert to fraction form
    138,745,093.76/208,246,710.72 = 70,638,730.88/x
  3. Step 3: Cross multiply
    138,745,093.76x = 208,246,710.72 × 70,638,730.88
  4. Step 4: Simplify right side
    138,745,093.76x = 14,710,283,355,195,290
  5. Step 5: Solve for x
    x = 14,710,283,355,195,290/138,745,093.76
  6. Step 6: Final answer
    x = 106,023,809.25

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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.