Home / 151,428.65-208,957.26-89,329.45

Finding the Fourth Proportional to 151,428.65, 208,957.26 and 89,329.45

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Solution

The fourth proportional to 151,428.65, 208,957.26 and 89,329.45 is: 123,266.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,428.65 : 208,957.26 = 89,329.45 : x
  2. Step 2: Convert to fraction form
    151,428.65/208,957.26 = 89,329.45/x
  3. Step 3: Cross multiply
    151,428.65x = 208,957.26 × 89,329.45
  4. Step 4: Simplify right side
    151,428.65x = 18,666,037,631.70
  5. Step 5: Solve for x
    x = 18,666,037,631.70/151,428.65
  6. Step 6: Final answer
    x = 123,266.22

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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.