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Finding the Fourth Proportional to 122,457.60, 183,643.20 and 55,929.60

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Solution

The fourth proportional to 122,457.60, 183,643.20 and 55,929.60 is: 83,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,457.60 : 183,643.20 = 55,929.60 : x
  2. Step 2: Convert to fraction form
    122,457.60/183,643.20 = 55,929.60/x
  3. Step 3: Cross multiply
    122,457.60x = 183,643.20 × 55,929.60
  4. Step 4: Simplify right side
    122,457.60x = 10,271,090,718.72
  5. Step 5: Solve for x
    x = 10,271,090,718.72/122,457.60
  6. Step 6: Final answer
    x = 83,874.67

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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.