Home / 115,088.28-172,402.68-91,435.80

Finding the Fourth Proportional to 115,088.28, 172,402.68 and 91,435.80

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Solution

The fourth proportional to 115,088.28, 172,402.68 and 91,435.80 is: 136,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,088.28 : 172,402.68 = 91,435.80 : x
  2. Step 2: Convert to fraction form
    115,088.28/172,402.68 = 91,435.80/x
  3. Step 3: Cross multiply
    115,088.28x = 172,402.68 × 91,435.80
  4. Step 4: Simplify right side
    115,088.28x = 15,763,776,967.94
  5. Step 5: Solve for x
    x = 15,763,776,967.94/115,088.28
  6. Step 6: Final answer
    x = 136,971.18

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1.5x scale

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.