Home / 129,658,797.78-178,927,035.60-70,920,949.11

Finding the Fourth Proportional to 129,658,797.78, 178,927,035.60 and 70,920,949.11

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Solution

The fourth proportional to 129,658,797.78, 178,927,035.60 and 70,920,949.11 is: 97,869,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,658,797.78 : 178,927,035.60 = 70,920,949.11 : x
  2. Step 2: Convert to fraction form
    129,658,797.78/178,927,035.60 = 70,920,949.11/x
  3. Step 3: Cross multiply
    129,658,797.78x = 178,927,035.60 × 70,920,949.11
  4. Step 4: Simplify right side
    129,658,797.78x = 12,689,675,186,190,758
  5. Step 5: Solve for x
    x = 12,689,675,186,190,758/129,658,797.78
  6. Step 6: Final answer
    x = 97,869,758.19

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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.