Home / 128,574,076.59-177,433,663.56-75,662,482.02

Finding the Fourth Proportional to 128,574,076.59, 177,433,663.56 and 75,662,482.02

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Solution

The fourth proportional to 128,574,076.59, 177,433,663.56 and 75,662,482.02 is: 104,415,071.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574,076.59 : 177,433,663.56 = 75,662,482.02 : x
  2. Step 2: Convert to fraction form
    128,574,076.59/177,433,663.56 = 75,662,482.02/x
  3. Step 3: Cross multiply
    128,574,076.59x = 177,433,663.56 × 75,662,482.02
  4. Step 4: Simplify right side
    128,574,076.59x = 13,425,071,378,851,228
  5. Step 5: Solve for x
    x = 13,425,071,378,851,228/128,574,076.59
  6. Step 6: Final answer
    x = 104,415,071.33

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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.