Home / 128,535,222.74-177,376,073.90-75,617,649.47

Finding the Fourth Proportional to 128,535,222.74, 177,376,073.90 and 75,617,649.47

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Solution

The fourth proportional to 128,535,222.74, 177,376,073.90 and 75,617,649.47 is: 104,350,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535,222.74 : 177,376,073.90 = 75,617,649.47 : x
  2. Step 2: Convert to fraction form
    128,535,222.74/177,376,073.90 = 75,617,649.47/x
  3. Step 3: Cross multiply
    128,535,222.74x = 177,376,073.90 × 75,617,649.47
  4. Step 4: Simplify right side
    128,535,222.74x = 13,412,761,779,566,656
  5. Step 5: Solve for x
    x = 13,412,761,779,566,656/128,535,222.74
  6. Step 6: Final answer
    x = 104,350,865.81

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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.