Home / 128,065,752.78-176,730,795.90-69,328,416

Finding the Fourth Proportional to 128,065,752.78, 176,730,795.90 and 69,328,416

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Solution

The fourth proportional to 128,065,752.78, 176,730,795.90 and 69,328,416 is: 95,673,244.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,065,752.78 : 176,730,795.90 = 69,328,416 : x
  2. Step 2: Convert to fraction form
    128,065,752.78/176,730,795.90 = 69,328,416/x
  3. Step 3: Cross multiply
    128,065,752.78x = 176,730,795.90 × 69,328,416
  4. Step 4: Simplify right side
    128,065,752.78x = 12,252,466,138,166,294
  5. Step 5: Solve for x
    x = 12,252,466,138,166,294/128,065,752.78
  6. Step 6: Final answer
    x = 95,673,244.97

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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.