Home / 128,574,056.85-177,433,636.28-75,662,462.30

Finding the Fourth Proportional to 128,574,056.85, 177,433,636.28 and 75,662,462.30

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Solution

The fourth proportional to 128,574,056.85, 177,433,636.28 and 75,662,462.30 is: 104,415,044.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,574,056.85 : 177,433,636.28 = 75,662,462.30 : x
  2. Step 2: Convert to fraction form
    128,574,056.85/177,433,636.28 = 75,662,462.30/x
  3. Step 3: Cross multiply
    128,574,056.85x = 177,433,636.28 × 75,662,462.30
  4. Step 4: Simplify right side
    128,574,056.85x = 13,425,065,814,521,932
  5. Step 5: Solve for x
    x = 13,425,065,814,521,932/128,574,056.85
  6. Step 6: Final answer
    x = 104,415,044.09

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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.