Home / 115,041.60-172,332.63-91,389.06

Finding the Fourth Proportional to 115,041.60, 172,332.63 and 91,389.06

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Solution

The fourth proportional to 115,041.60, 172,332.63 and 91,389.06 is: 136,901.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,041.60 : 172,332.63 = 91,389.06 : x
  2. Step 2: Convert to fraction form
    115,041.60/172,332.63 = 91,389.06/x
  3. Step 3: Cross multiply
    115,041.60x = 172,332.63 × 91,389.06
  4. Step 4: Simplify right side
    115,041.60x = 15,749,317,063.03
  5. Step 5: Solve for x
    x = 15,749,317,063.03/115,041.60
  6. Step 6: Final answer
    x = 136,901.06

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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.