Home / 151,390,728.39-208,919,296.73-81,776,140.03

Finding the Fourth Proportional to 151,390,728.39, 208,919,296.73 and 81,776,140.03

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Solution

The fourth proportional to 151,390,728.39, 208,919,296.73 and 81,776,140.03 is: 112,851,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,390,728.39 : 208,919,296.73 = 81,776,140.03 : x
  2. Step 2: Convert to fraction form
    151,390,728.39/208,919,296.73 = 81,776,140.03/x
  3. Step 3: Cross multiply
    151,390,728.39x = 208,919,296.73 × 81,776,140.03
  4. Step 4: Simplify right side
    151,390,728.39x = 17,084,613,663,192,440
  5. Step 5: Solve for x
    x = 17,084,613,663,192,440/151,390,728.39
  6. Step 6: Final answer
    x = 112,851,122.69

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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.