Home / 128,899,156.05-177,885,528.17-70,158,981.51

Finding the Fourth Proportional to 128,899,156.05, 177,885,528.17 and 70,158,981.51

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Solution

The fourth proportional to 128,899,156.05, 177,885,528.17 and 70,158,981.51 is: 96,821,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899,156.05 : 177,885,528.17 = 70,158,981.51 : x
  2. Step 2: Convert to fraction form
    128,899,156.05/177,885,528.17 = 70,158,981.51/x
  3. Step 3: Cross multiply
    128,899,156.05x = 177,885,528.17 × 70,158,981.51
  4. Step 4: Simplify right side
    128,899,156.05x = 12,480,267,481,424,820
  5. Step 5: Solve for x
    x = 12,480,267,481,424,820/128,899,156.05
  6. Step 6: Final answer
    x = 96,821,948.75

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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.