Home / 129,479,501.59-178,679,621.41-70,740,902.50

Finding the Fourth Proportional to 129,479,501.59, 178,679,621.41 and 70,740,902.50

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Solution

The fourth proportional to 129,479,501.59, 178,679,621.41 and 70,740,902.50 is: 97,621,303.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,479,501.59 : 178,679,621.41 = 70,740,902.50 : x
  2. Step 2: Convert to fraction form
    129,479,501.59/178,679,621.41 = 70,740,902.50/x
  3. Step 3: Cross multiply
    129,479,501.59x = 178,679,621.41 × 70,740,902.50
  4. Step 4: Simplify right side
    129,479,501.59x = 12,639,957,676,278,172
  5. Step 5: Solve for x
    x = 12,639,957,676,278,172/129,479,501.59
  6. Step 6: Final answer
    x = 97,621,303.15

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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.