Home / 127,815.71-176,386.37-74,132.55

Finding the Fourth Proportional to 127,815.71, 176,386.37 and 74,132.55

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Solution

The fourth proportional to 127,815.71, 176,386.37 and 74,132.55 is: 102,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,815.71 : 176,386.37 = 74,132.55 : x
  2. Step 2: Convert to fraction form
    127,815.71/176,386.37 = 74,132.55/x
  3. Step 3: Cross multiply
    127,815.71x = 176,386.37 × 74,132.55
  4. Step 4: Simplify right side
    127,815.71x = 13,075,971,022.68
  5. Step 5: Solve for x
    x = 13,075,971,022.68/127,815.71
  6. Step 6: Final answer
    x = 102,303.32

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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.