Home / 121,038.21-181,581.93-42,158.58

Finding the Fourth Proportional to 121,038.21, 181,581.93 and 42,158.58

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Solution

The fourth proportional to 121,038.21, 181,581.93 and 42,158.58 is: 63,246.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,038.21 : 181,581.93 = 42,158.58 : x
  2. Step 2: Convert to fraction form
    121,038.21/181,581.93 = 42,158.58/x
  3. Step 3: Cross multiply
    121,038.21x = 181,581.93 × 42,158.58
  4. Step 4: Simplify right side
    121,038.21x = 7,655,236,322.46
  5. Step 5: Solve for x
    x = 7,655,236,322.46/121,038.21
  6. Step 6: Final answer
    x = 63,246.44

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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.