Home / 103,611.60-155,417.40-28,731.60

Finding the Fourth Proportional to 103,611.60, 155,417.40 and 28,731.60

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Solution

The fourth proportional to 103,611.60, 155,417.40 and 28,731.60 is: 43,097.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,611.60 : 155,417.40 = 28,731.60 : x
  2. Step 2: Convert to fraction form
    103,611.60/155,417.40 = 28,731.60/x
  3. Step 3: Cross multiply
    103,611.60x = 155,417.40 × 28,731.60
  4. Step 4: Simplify right side
    103,611.60x = 4,465,390,569.84
  5. Step 5: Solve for x
    x = 4,465,390,569.84/103,611.60
  6. Step 6: Final answer
    x = 43,097.40

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1.5x scale

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.