Home / 115,341.20-159,143.64-65,030.48

Finding the Fourth Proportional to 115,341.20, 159,143.64 and 65,030.48

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Solution

The fourth proportional to 115,341.20, 159,143.64 and 65,030.48 is: 89,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,341.20 : 159,143.64 = 65,030.48 : x
  2. Step 2: Convert to fraction form
    115,341.20/159,143.64 = 65,030.48/x
  3. Step 3: Cross multiply
    115,341.20x = 159,143.64 × 65,030.48
  4. Step 4: Simplify right side
    115,341.20x = 10,349,187,298.15
  5. Step 5: Solve for x
    x = 10,349,187,298.15/115,341.20
  6. Step 6: Final answer
    x = 89,726.72

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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.