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Finding the Fourth Proportional to 180,920.80, 249,700.60 and 100,374.28

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Solution

The fourth proportional to 180,920.80, 249,700.60 and 100,374.28 is: 138,533.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,920.80 : 249,700.60 = 100,374.28 : x
  2. Step 2: Convert to fraction form
    180,920.80/249,700.60 = 100,374.28/x
  3. Step 3: Cross multiply
    180,920.80x = 249,700.60 × 100,374.28
  4. Step 4: Simplify right side
    180,920.80x = 25,063,516,441.13
  5. Step 5: Solve for x
    x = 25,063,516,441.13/180,920.80
  6. Step 6: Final answer
    x = 138,533.08

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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.