Home / 129,221,280.45-178,325,925.44-70,485,206.13

Finding the Fourth Proportional to 129,221,280.45, 178,325,925.44 and 70,485,206.13

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Solution

The fourth proportional to 129,221,280.45, 178,325,925.44 and 70,485,206.13 is: 97,269,889.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,221,280.45 : 178,325,925.44 = 70,485,206.13 : x
  2. Step 2: Convert to fraction form
    129,221,280.45/178,325,925.44 = 70,485,206.13/x
  3. Step 3: Cross multiply
    129,221,280.45x = 178,325,925.44 × 70,485,206.13
  4. Step 4: Simplify right side
    129,221,280.45x = 12,569,339,612,608,984
  5. Step 5: Solve for x
    x = 12,569,339,612,608,984/129,221,280.45
  6. Step 6: Final answer
    x = 97,269,889.05

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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.