Home / 145,734.80-218,602.20-83,411.60

Finding the Fourth Proportional to 145,734.80, 218,602.20 and 83,411.60

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Solution

The fourth proportional to 145,734.80, 218,602.20 and 83,411.60 is: 125,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,734.80 : 218,602.20 = 83,411.60 : x
  2. Step 2: Convert to fraction form
    145,734.80/218,602.20 = 83,411.60/x
  3. Step 3: Cross multiply
    145,734.80x = 218,602.20 × 83,411.60
  4. Step 4: Simplify right side
    145,734.80x = 18,233,959,265.52
  5. Step 5: Solve for x
    x = 18,233,959,265.52/145,734.80
  6. Step 6: Final answer
    x = 125,117.40

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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.