Home / 85,915,692.36-128,703,476.59-75,145,154.76

Finding the Fourth Proportional to 85,915,692.36, 128,703,476.59 and 75,145,154.76

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Solution

The fourth proportional to 85,915,692.36, 128,703,476.59 and 75,145,154.76 is: 112,568,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,915,692.36 : 128,703,476.59 = 75,145,154.76 : x
  2. Step 2: Convert to fraction form
    85,915,692.36/128,703,476.59 = 75,145,154.76/x
  3. Step 3: Cross multiply
    85,915,692.36x = 128,703,476.59 × 75,145,154.76
  4. Step 4: Simplify right side
    85,915,692.36x = 9,671,442,666,505,588
  5. Step 5: Solve for x
    x = 9,671,442,666,505,588/85,915,692.36
  6. Step 6: Final answer
    x = 112,568,989.45

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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.