Home / 128,115,571.04-176,799,658.74-69,378,337.52

Finding the Fourth Proportional to 128,115,571.04, 176,799,658.74 and 69,378,337.52

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Solution

The fourth proportional to 128,115,571.04, 176,799,658.74 and 69,378,337.52 is: 95,742,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,571.04 : 176,799,658.74 = 69,378,337.52 : x
  2. Step 2: Convert to fraction form
    128,115,571.04/176,799,658.74 = 69,378,337.52/x
  3. Step 3: Cross multiply
    128,115,571.04x = 176,799,658.74 × 69,378,337.52
  4. Step 4: Simplify right side
    128,115,571.04x = 12,266,066,397,484,538
  5. Step 5: Solve for x
    x = 12,266,066,397,484,538/128,115,571.04
  6. Step 6: Final answer
    x = 95,742,198.22

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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.