Home / 161,688.49-221,514.29-155,628.05

Finding the Fourth Proportional to 161,688.49, 221,514.29 and 155,628.05

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Solution

The fourth proportional to 161,688.49, 221,514.29 and 155,628.05 is: 213,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,688.49 : 221,514.29 = 155,628.05 : x
  2. Step 2: Convert to fraction form
    161,688.49/221,514.29 = 155,628.05/x
  3. Step 3: Cross multiply
    161,688.49x = 221,514.29 × 155,628.05
  4. Step 4: Simplify right side
    161,688.49x = 34,473,836,999.83
  5. Step 5: Solve for x
    x = 34,473,836,999.83/161,688.49
  6. Step 6: Final answer
    x = 213,211.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.