Home / 128,996,261.04-178,018,928.92-70,260,701.84

Finding the Fourth Proportional to 128,996,261.04, 178,018,928.92 and 70,260,701.84

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Solution

The fourth proportional to 128,996,261.04, 178,018,928.92 and 70,260,701.84 is: 96,961,995.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,996,261.04 : 178,018,928.92 = 70,260,701.84 : x
  2. Step 2: Convert to fraction form
    128,996,261.04/178,018,928.92 = 70,260,701.84/x
  3. Step 3: Cross multiply
    128,996,261.04x = 178,018,928.92 × 70,260,701.84
  4. Step 4: Simplify right side
    128,996,261.04x = 12,507,734,886,724,272
  5. Step 5: Solve for x
    x = 12,507,734,886,724,272/128,996,261.04
  6. Step 6: Final answer
    x = 96,961,995.53

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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.