Home / 127,862.12-191,547.65-71,531.51

Finding the Fourth Proportional to 127,862.12, 191,547.65 and 71,531.51

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Solution

The fourth proportional to 127,862.12, 191,547.65 and 71,531.51 is: 107,159.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,862.12 : 191,547.65 = 71,531.51 : x
  2. Step 2: Convert to fraction form
    127,862.12/191,547.65 = 71,531.51/x
  3. Step 3: Cross multiply
    127,862.12x = 191,547.65 × 71,531.51
  4. Step 4: Simplify right side
    127,862.12x = 13,701,692,641.45
  5. Step 5: Solve for x
    x = 13,701,692,641.45/127,862.12
  6. Step 6: Final answer
    x = 107,159.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.