Home / 128,821,870.92-177,774,955.02-70,084,957.44

Finding the Fourth Proportional to 128,821,870.92, 177,774,955.02 and 70,084,957.44

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Solution

The fourth proportional to 128,821,870.92, 177,774,955.02 and 70,084,957.44 is: 96,717,661.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,821,870.92 : 177,774,955.02 = 70,084,957.44 : x
  2. Step 2: Convert to fraction form
    128,821,870.92/177,774,955.02 = 70,084,957.44/x
  3. Step 3: Cross multiply
    128,821,870.92x = 177,774,955.02 × 70,084,957.44
  4. Step 4: Simplify right side
    128,821,870.92x = 12,459,350,156,474,614
  5. Step 5: Solve for x
    x = 12,459,350,156,474,614/128,821,870.92
  6. Step 6: Final answer
    x = 96,717,661.90

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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.