Home / 128,423.45-177,224.57-71,065.18

Finding the Fourth Proportional to 128,423.45, 177,224.57 and 71,065.18

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Solution

The fourth proportional to 128,423.45, 177,224.57 and 71,065.18 is: 98,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,423.45 : 177,224.57 = 71,065.18 : x
  2. Step 2: Convert to fraction form
    128,423.45/177,224.57 = 71,065.18/x
  3. Step 3: Cross multiply
    128,423.45x = 177,224.57 × 71,065.18
  4. Step 4: Simplify right side
    128,423.45x = 12,594,495,612.15
  5. Step 5: Solve for x
    x = 12,594,495,612.15/128,423.45
  6. Step 6: Final answer
    x = 98,070.07

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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.