Home / 138,147,742.05-190,642,897.02-75,423,838.06

Finding the Fourth Proportional to 138,147,742.05, 190,642,897.02 and 75,423,838.06

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Solution

The fourth proportional to 138,147,742.05, 190,642,897.02 and 75,423,838.06 is: 104,084,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,147,742.05 : 190,642,897.02 = 75,423,838.06 : x
  2. Step 2: Convert to fraction form
    138,147,742.05/190,642,897.02 = 75,423,838.06/x
  3. Step 3: Cross multiply
    138,147,742.05x = 190,642,897.02 × 75,423,838.06
  4. Step 4: Simplify right side
    138,147,742.05x = 14,379,018,992,125,738
  5. Step 5: Solve for x
    x = 14,379,018,992,125,738/138,147,742.05
  6. Step 6: Final answer
    x = 104,084,357.65

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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.