Home / 130,741,670.61-180,421,304.45-72,009,805.05

Finding the Fourth Proportional to 130,741,670.61, 180,421,304.45 and 72,009,805.05

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Solution

The fourth proportional to 130,741,670.61, 180,421,304.45 and 72,009,805.05 is: 99,372,318.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,741,670.61 : 180,421,304.45 = 72,009,805.05 : x
  2. Step 2: Convert to fraction form
    130,741,670.61/180,421,304.45 = 72,009,805.05/x
  3. Step 3: Cross multiply
    130,741,670.61x = 180,421,304.45 × 72,009,805.05
  4. Step 4: Simplify right side
    130,741,670.61x = 12,992,102,959,951,148
  5. Step 5: Solve for x
    x = 12,992,102,959,951,148/130,741,670.61
  6. Step 6: Final answer
    x = 99,372,318.71

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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.