Home / 129,625,730.46-178,899,848.78-85,009,224.06

Finding the Fourth Proportional to 129,625,730.46, 178,899,848.78 and 85,009,224.06

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Solution

The fourth proportional to 129,625,730.46, 178,899,848.78 and 85,009,224.06 is: 117,323,445.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,625,730.46 : 178,899,848.78 = 85,009,224.06 : x
  2. Step 2: Convert to fraction form
    129,625,730.46/178,899,848.78 = 85,009,224.06/x
  3. Step 3: Cross multiply
    129,625,730.46x = 178,899,848.78 × 85,009,224.06
  4. Step 4: Simplify right side
    129,625,730.46x = 15,208,137,328,814,092
  5. Step 5: Solve for x
    x = 15,208,137,328,814,092/129,625,730.46
  6. Step 6: Final answer
    x = 117,323,445.54

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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.