Home / 121,320,007.60-181,980,011.40-75,403,505.20

Finding the Fourth Proportional to 121,320,007.60, 181,980,011.40 and 75,403,505.20

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Solution

The fourth proportional to 121,320,007.60, 181,980,011.40 and 75,403,505.20 is: 113,105,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320,007.60 : 181,980,011.40 = 75,403,505.20 : x
  2. Step 2: Convert to fraction form
    121,320,007.60/181,980,011.40 = 75,403,505.20/x
  3. Step 3: Cross multiply
    121,320,007.60x = 181,980,011.40 × 75,403,505.20
  4. Step 4: Simplify right side
    121,320,007.60x = 13,721,930,735,895,960
  5. Step 5: Solve for x
    x = 13,721,930,735,895,960/121,320,007.60
  6. Step 6: Final answer
    x = 113,105,257.80

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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.