Home / 128,897,372.88-177,882,155.16-70,163,869.20

Finding the Fourth Proportional to 128,897,372.88, 177,882,155.16 and 70,163,869.20

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Solution

The fourth proportional to 128,897,372.88, 177,882,155.16 and 70,163,869.20 is: 96,828,197.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897,372.88 : 177,882,155.16 = 70,163,869.20 : x
  2. Step 2: Convert to fraction form
    128,897,372.88/177,882,155.16 = 70,163,869.20/x
  3. Step 3: Cross multiply
    128,897,372.88x = 177,882,155.16 × 70,163,869.20
  4. Step 4: Simplify right side
    128,897,372.88x = 12,480,900,267,660,346
  5. Step 5: Solve for x
    x = 12,480,900,267,660,346/128,897,372.88
  6. Step 6: Final answer
    x = 96,828,197.42

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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.