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Finding the Fourth Proportional to 180,548.84, 249,155.52 and 99,979.76

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Solution

The fourth proportional to 180,548.84, 249,155.52 and 99,979.76 is: 137,971.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,548.84 : 249,155.52 = 99,979.76 : x
  2. Step 2: Convert to fraction form
    180,548.84/249,155.52 = 99,979.76/x
  3. Step 3: Cross multiply
    180,548.84x = 249,155.52 × 99,979.76
  4. Step 4: Simplify right side
    180,548.84x = 24,910,509,092.28
  5. Step 5: Solve for x
    x = 24,910,509,092.28/180,548.84
  6. Step 6: Final answer
    x = 137,971.03

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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.