Home / 121,428.47-182,032.45-42,499.64

Finding the Fourth Proportional to 121,428.47, 182,032.45 and 42,499.64

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Solution

The fourth proportional to 121,428.47, 182,032.45 and 42,499.64 is: 63,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,428.47 : 182,032.45 = 42,499.64 : x
  2. Step 2: Convert to fraction form
    121,428.47/182,032.45 = 42,499.64/x
  3. Step 3: Cross multiply
    121,428.47x = 182,032.45 × 42,499.64
  4. Step 4: Simplify right side
    121,428.47x = 7,736,313,593.32
  5. Step 5: Solve for x
    x = 7,736,313,593.32/121,428.47
  6. Step 6: Final answer
    x = 63,710.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.