Home / 86,938,280.20-130,407,420.30-80,369,115.40

Finding the Fourth Proportional to 86,938,280.20, 130,407,420.30 and 80,369,115.40

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Solution

The fourth proportional to 86,938,280.20, 130,407,420.30 and 80,369,115.40 is: 120,553,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938,280.20 : 130,407,420.30 = 80,369,115.40 : x
  2. Step 2: Convert to fraction form
    86,938,280.20/130,407,420.30 = 80,369,115.40/x
  3. Step 3: Cross multiply
    86,938,280.20x = 130,407,420.30 × 80,369,115.40
  4. Step 4: Simplify right side
    86,938,280.20x = 10,480,729,011,107,004
  5. Step 5: Solve for x
    x = 10,480,729,011,107,004/86,938,280.20
  6. Step 6: Final answer
    x = 120,553,673.10

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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.