Home / 138,476,099.68-191,085,113.28-76,581,031.84

Finding the Fourth Proportional to 138,476,099.68, 191,085,113.28 and 76,581,031.84

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Solution

The fourth proportional to 138,476,099.68, 191,085,113.28 and 76,581,031.84 is: 105,675,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,476,099.68 : 191,085,113.28 = 76,581,031.84 : x
  2. Step 2: Convert to fraction form
    138,476,099.68/191,085,113.28 = 76,581,031.84/x
  3. Step 3: Cross multiply
    138,476,099.68x = 191,085,113.28 × 76,581,031.84
  4. Step 4: Simplify right side
    138,476,099.68x = 14,633,495,144,245,688
  5. Step 5: Solve for x
    x = 14,633,495,144,245,688/138,476,099.68
  6. Step 6: Final answer
    x = 105,675,240.55

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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.