Home / 115,210.52-159,035.10-90,068.12

Finding the Fourth Proportional to 115,210.52, 159,035.10 and 90,068.12

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Solution

The fourth proportional to 115,210.52, 159,035.10 and 90,068.12 is: 124,328.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,210.52 : 159,035.10 = 90,068.12 : x
  2. Step 2: Convert to fraction form
    115,210.52/159,035.10 = 90,068.12/x
  3. Step 3: Cross multiply
    115,210.52x = 159,035.10 × 90,068.12
  4. Step 4: Simplify right side
    115,210.52x = 14,323,992,471.01
  5. Step 5: Solve for x
    x = 14,323,992,471.01/115,210.52
  6. Step 6: Final answer
    x = 124,328.86

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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.