Home / 121,031.31-181,547.79-42,145.29

Finding the Fourth Proportional to 121,031.31, 181,547.79 and 42,145.29

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Solution

The fourth proportional to 121,031.31, 181,547.79 and 42,145.29 is: 63,218.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,031.31 : 181,547.79 = 42,145.29 : x
  2. Step 2: Convert to fraction form
    121,031.31/181,547.79 = 42,145.29/x
  3. Step 3: Cross multiply
    121,031.31x = 181,547.79 × 42,145.29
  4. Step 4: Simplify right side
    121,031.31x = 7,651,384,258.41
  5. Step 5: Solve for x
    x = 7,651,384,258.41/121,031.31
  6. Step 6: Final answer
    x = 63,218.22

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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.