Home / 131,130,631.20-180,983,958.48-78,210,730.56

Finding the Fourth Proportional to 131,130,631.20, 180,983,958.48 and 78,210,730.56

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Solution

The fourth proportional to 131,130,631.20, 180,983,958.48 and 78,210,730.56 is: 107,944,936.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,130,631.20 : 180,983,958.48 = 78,210,730.56 : x
  2. Step 2: Convert to fraction form
    131,130,631.20/180,983,958.48 = 78,210,730.56/x
  3. Step 3: Cross multiply
    131,130,631.20x = 180,983,958.48 × 78,210,730.56
  4. Step 4: Simplify right side
    131,130,631.20x = 14,154,887,612,361,506
  5. Step 5: Solve for x
    x = 14,154,887,612,361,506/131,130,631.20
  6. Step 6: Final answer
    x = 107,944,936.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.