Home / 129,185,671.18-178,306,148.34-85,140,497.20

Finding the Fourth Proportional to 129,185,671.18, 178,306,148.34 and 85,140,497.20

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Solution

The fourth proportional to 129,185,671.18, 178,306,148.34 and 85,140,497.20 is: 117,513,606.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,185,671.18 : 178,306,148.34 = 85,140,497.20 : x
  2. Step 2: Convert to fraction form
    129,185,671.18/178,306,148.34 = 85,140,497.20/x
  3. Step 3: Cross multiply
    129,185,671.18x = 178,306,148.34 × 85,140,497.20
  4. Step 4: Simplify right side
    129,185,671.18x = 15,181,074,123,484,556
  5. Step 5: Solve for x
    x = 15,181,074,123,484,556/129,185,671.18
  6. Step 6: Final answer
    x = 117,513,606.46

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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.