Home / 128,980,989.16-178,001,252.26-97,134,158.76

Finding the Fourth Proportional to 128,980,989.16, 178,001,252.26 and 97,134,158.76

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Solution

The fourth proportional to 128,980,989.16, 178,001,252.26 and 97,134,158.76 is: 134,050,777.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,980,989.16 : 178,001,252.26 = 97,134,158.76 : x
  2. Step 2: Convert to fraction form
    128,980,989.16/178,001,252.26 = 97,134,158.76/x
  3. Step 3: Cross multiply
    128,980,989.16x = 178,001,252.26 × 97,134,158.76
  4. Step 4: Simplify right side
    128,980,989.16x = 17,290,001,896,501,648
  5. Step 5: Solve for x
    x = 17,290,001,896,501,648/128,980,989.16
  6. Step 6: Final answer
    x = 134,050,777.63

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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.