Home / 86,224,141.80-129,336,212.70-79,988,567.40

Finding the Fourth Proportional to 86,224,141.80, 129,336,212.70 and 79,988,567.40

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Solution

The fourth proportional to 86,224,141.80, 129,336,212.70 and 79,988,567.40 is: 119,982,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,224,141.80 : 129,336,212.70 = 79,988,567.40 : x
  2. Step 2: Convert to fraction form
    86,224,141.80/129,336,212.70 = 79,988,567.40/x
  3. Step 3: Cross multiply
    86,224,141.80x = 129,336,212.70 × 79,988,567.40
  4. Step 4: Simplify right side
    86,224,141.80x = 10,345,418,366,814,686
  5. Step 5: Solve for x
    x = 10,345,418,366,814,686/86,224,141.80
  6. Step 6: Final answer
    x = 119,982,851.10

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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.