Home / 151,434.23-208,979.53-91,005.80

Finding the Fourth Proportional to 151,434.23, 208,979.53 and 91,005.80

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Solution

The fourth proportional to 151,434.23, 208,979.53 and 91,005.80 is: 125,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,434.23 : 208,979.53 = 91,005.80 : x
  2. Step 2: Convert to fraction form
    151,434.23/208,979.53 = 91,005.80/x
  3. Step 3: Cross multiply
    151,434.23x = 208,979.53 × 91,005.80
  4. Step 4: Simplify right side
    151,434.23x = 19,018,348,038.86
  5. Step 5: Solve for x
    x = 19,018,348,038.86/151,434.23
  6. Step 6: Final answer
    x = 125,588.18

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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.