Home / 115,119,036.32-172,768,099.64-80,349,561

Finding the Fourth Proportional to 115,119,036.32, 172,768,099.64 and 80,349,561

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Solution

The fourth proportional to 115,119,036.32, 172,768,099.64 and 80,349,561 is: 120,586,841.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,119,036.32 : 172,768,099.64 = 80,349,561 : x
  2. Step 2: Convert to fraction form
    115,119,036.32/172,768,099.64 = 80,349,561/x
  3. Step 3: Cross multiply
    115,119,036.32x = 172,768,099.64 × 80,349,561
  4. Step 4: Simplify right side
    115,119,036.32x = 13,881,840,960,476,510
  5. Step 5: Solve for x
    x = 13,881,840,960,476,510/115,119,036.32
  6. Step 6: Final answer
    x = 120,586,841.28

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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.