Home / 153,717.09-230,501.75-87,139.34

Finding the Fourth Proportional to 153,717.09, 230,501.75 and 87,139.34

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Solution

The fourth proportional to 153,717.09, 230,501.75 and 87,139.34 is: 130,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,717.09 : 230,501.75 = 87,139.34 : x
  2. Step 2: Convert to fraction form
    153,717.09/230,501.75 = 87,139.34/x
  3. Step 3: Cross multiply
    153,717.09x = 230,501.75 × 87,139.34
  4. Step 4: Simplify right side
    153,717.09x = 20,085,771,426.75
  5. Step 5: Solve for x
    x = 20,085,771,426.75/153,717.09
  6. Step 6: Final answer
    x = 130,667.13

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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.