Home / 157,412.51-217,234.34-89,428.25

Finding the Fourth Proportional to 157,412.51, 217,234.34 and 89,428.25

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Solution

The fourth proportional to 157,412.51, 217,234.34 and 89,428.25 is: 123,413.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,412.51 : 217,234.34 = 89,428.25 : x
  2. Step 2: Convert to fraction form
    157,412.51/217,234.34 = 89,428.25/x
  3. Step 3: Cross multiply
    157,412.51x = 217,234.34 × 89,428.25
  4. Step 4: Simplify right side
    157,412.51x = 19,426,887,297.41
  5. Step 5: Solve for x
    x = 19,426,887,297.41/157,412.51
  6. Step 6: Final answer
    x = 123,413.87

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1.5x scale

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.