Home / 143,557.68-197,904.28-100,984.08

Finding the Fourth Proportional to 143,557.68, 197,904.28 and 100,984.08

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Solution

The fourth proportional to 143,557.68, 197,904.28 and 100,984.08 is: 139,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,557.68 : 197,904.28 = 100,984.08 : x
  2. Step 2: Convert to fraction form
    143,557.68/197,904.28 = 100,984.08/x
  3. Step 3: Cross multiply
    143,557.68x = 197,904.28 × 100,984.08
  4. Step 4: Simplify right side
    143,557.68x = 19,985,181,643.86
  5. Step 5: Solve for x
    x = 19,985,181,643.86/143,557.68
  6. Step 6: Final answer
    x = 139,213.60

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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.