Home / 102,689.03-141,708.09-56,120.06

Finding the Fourth Proportional to 102,689.03, 141,708.09 and 56,120.06

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Solution

The fourth proportional to 102,689.03, 141,708.09 and 56,120.06 is: 77,444.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,689.03 : 141,708.09 = 56,120.06 : x
  2. Step 2: Convert to fraction form
    102,689.03/141,708.09 = 56,120.06/x
  3. Step 3: Cross multiply
    102,689.03x = 141,708.09 × 56,120.06
  4. Step 4: Simplify right side
    102,689.03x = 7,952,666,513.29
  5. Step 5: Solve for x
    x = 7,952,666,513.29/102,689.03
  6. Step 6: Final answer
    x = 77,444.17

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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.