Home / 128,889,551.28-177,868,320.48-70,152,076.20

Finding the Fourth Proportional to 128,889,551.28, 177,868,320.48 and 70,152,076.20

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Solution

The fourth proportional to 128,889,551.28, 177,868,320.48 and 70,152,076.20 is: 96,810,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889,551.28 : 177,868,320.48 = 70,152,076.20 : x
  2. Step 2: Convert to fraction form
    128,889,551.28/177,868,320.48 = 70,152,076.20/x
  3. Step 3: Cross multiply
    128,889,551.28x = 177,868,320.48 × 70,152,076.20
  4. Step 4: Simplify right side
    128,889,551.28x = 12,477,831,971,878,980
  5. Step 5: Solve for x
    x = 12,477,831,971,878,980/128,889,551.28
  6. Step 6: Final answer
    x = 96,810,267.77

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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.