Home / 128,009,445.51-176,653,035.03-69,272,110.60

Finding the Fourth Proportional to 128,009,445.51, 176,653,035.03 and 69,272,110.60

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Solution

The fourth proportional to 128,009,445.51, 176,653,035.03 and 69,272,110.60 is: 95,595,512.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,009,445.51 : 176,653,035.03 = 69,272,110.60 : x
  2. Step 2: Convert to fraction form
    128,009,445.51/176,653,035.03 = 69,272,110.60/x
  3. Step 3: Cross multiply
    128,009,445.51x = 176,653,035.03 × 69,272,110.60
  4. Step 4: Simplify right side
    128,009,445.51x = 12,237,128,580,423,834
  5. Step 5: Solve for x
    x = 12,237,128,580,423,834/128,009,445.51
  6. Step 6: Final answer
    x = 95,595,512.75

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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.