Home / 128,445,810.75-177,255,311.31-69,708,460.68

Finding the Fourth Proportional to 128,445,810.75, 177,255,311.31 and 69,708,460.68

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Solution

The fourth proportional to 128,445,810.75, 177,255,311.31 and 69,708,460.68 is: 96,197,725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,445,810.75 : 177,255,311.31 = 69,708,460.68 : x
  2. Step 2: Convert to fraction form
    128,445,810.75/177,255,311.31 = 69,708,460.68/x
  3. Step 3: Cross multiply
    128,445,810.75x = 177,255,311.31 × 69,708,460.68
  4. Step 4: Simplify right side
    128,445,810.75x = 12,356,194,898,774,296
  5. Step 5: Solve for x
    x = 12,356,194,898,774,296/128,445,810.75
  6. Step 6: Final answer
    x = 96,197,725.93

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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.