Home / 131,215.16-181,070.29-74,625.32

Finding the Fourth Proportional to 131,215.16, 181,070.29 and 74,625.32

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Solution

The fourth proportional to 131,215.16, 181,070.29 and 74,625.32 is: 102,979.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,215.16 : 181,070.29 = 74,625.32 : x
  2. Step 2: Convert to fraction form
    131,215.16/181,070.29 = 74,625.32/x
  3. Step 3: Cross multiply
    131,215.16x = 181,070.29 × 74,625.32
  4. Step 4: Simplify right side
    131,215.16x = 13,512,428,333.74
  5. Step 5: Solve for x
    x = 13,512,428,333.74/131,215.16
  6. Step 6: Final answer
    x = 102,979.17

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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.