Home / 86,938,310.70-130,407,466.05-80,369,145.90

Finding the Fourth Proportional to 86,938,310.70, 130,407,466.05 and 80,369,145.90

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Solution

The fourth proportional to 86,938,310.70, 130,407,466.05 and 80,369,145.90 is: 120,553,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938,310.70 : 130,407,466.05 = 80,369,145.90 : x
  2. Step 2: Convert to fraction form
    86,938,310.70/130,407,466.05 = 80,369,145.90/x
  3. Step 3: Cross multiply
    86,938,310.70x = 130,407,466.05 × 80,369,145.90
  4. Step 4: Simplify right side
    86,938,310.70x = 10,480,736,665,421,748
  5. Step 5: Solve for x
    x = 10,480,736,665,421,748/86,938,310.70
  6. Step 6: Final answer
    x = 120,553,718.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.