Home / 128,817,890.55-177,764,638.64-70,079,050.89

Finding the Fourth Proportional to 128,817,890.55, 177,764,638.64 and 70,079,050.89

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Solution

The fourth proportional to 128,817,890.55, 177,764,638.64 and 70,079,050.89 is: 96,706,886.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,817,890.55 : 177,764,638.64 = 70,079,050.89 : x
  2. Step 2: Convert to fraction form
    128,817,890.55/177,764,638.64 = 70,079,050.89/x
  3. Step 3: Cross multiply
    128,817,890.55x = 177,764,638.64 × 70,079,050.89
  4. Step 4: Simplify right side
    128,817,890.55x = 12,457,577,157,344,624
  5. Step 5: Solve for x
    x = 12,457,577,157,344,624/128,817,890.55
  6. Step 6: Final answer
    x = 96,706,886.79

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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.