Home / 127,781.51-176,339.69-70,422.90

Finding the Fourth Proportional to 127,781.51, 176,339.69 and 70,422.90

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Solution

The fourth proportional to 127,781.51, 176,339.69 and 70,422.90 is: 97,184.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,781.51 : 176,339.69 = 70,422.90 : x
  2. Step 2: Convert to fraction form
    127,781.51/176,339.69 = 70,422.90/x
  3. Step 3: Cross multiply
    127,781.51x = 176,339.69 × 70,422.90
  4. Step 4: Simplify right side
    127,781.51x = 12,418,352,275.06
  5. Step 5: Solve for x
    x = 12,418,352,275.06/127,781.51
  6. Step 6: Final answer
    x = 97,184.26

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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.