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Finding the Fourth Proportional to 180,830.60, 249,561.02 and 100,283.40

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Solution

The fourth proportional to 180,830.60, 249,561.02 and 100,283.40 is: 138,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,830.60 : 249,561.02 = 100,283.40 : x
  2. Step 2: Convert to fraction form
    180,830.60/249,561.02 = 100,283.40/x
  3. Step 3: Cross multiply
    180,830.60x = 249,561.02 × 100,283.40
  4. Step 4: Simplify right side
    180,830.60x = 25,026,827,593.07
  5. Step 5: Solve for x
    x = 25,026,827,593.07/180,830.60
  6. Step 6: Final answer
    x = 138,399.30

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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.