Home / 122,129.60-183,302.40-72,147.20

Finding the Fourth Proportional to 122,129.60, 183,302.40 and 72,147.20

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Solution

The fourth proportional to 122,129.60, 183,302.40 and 72,147.20 is: 108,284.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,129.60 : 183,302.40 = 72,147.20 : x
  2. Step 2: Convert to fraction form
    122,129.60/183,302.40 = 72,147.20/x
  3. Step 3: Cross multiply
    122,129.60x = 183,302.40 × 72,147.20
  4. Step 4: Simplify right side
    122,129.60x = 13,224,754,913.28
  5. Step 5: Solve for x
    x = 13,224,754,913.28/122,129.60
  6. Step 6: Final answer
    x = 108,284.60

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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.