Home / 128,130,211.52-176,818,815.60-69,391,525.76

Finding the Fourth Proportional to 128,130,211.52, 176,818,815.60 and 69,391,525.76

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Solution

The fourth proportional to 128,130,211.52, 176,818,815.60 and 69,391,525.76 is: 95,759,830.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130,211.52 : 176,818,815.60 = 69,391,525.76 : x
  2. Step 2: Convert to fraction form
    128,130,211.52/176,818,815.60 = 69,391,525.76/x
  3. Step 3: Cross multiply
    128,130,211.52x = 176,818,815.60 × 69,391,525.76
  4. Step 4: Simplify right side
    128,130,211.52x = 12,269,727,397,560,090
  5. Step 5: Solve for x
    x = 12,269,727,397,560,090/128,130,211.52
  6. Step 6: Final answer
    x = 95,759,830.97

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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.