Home / 145,975.20-218,962.80-52,490.40

Finding the Fourth Proportional to 145,975.20, 218,962.80 and 52,490.40

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Solution

The fourth proportional to 145,975.20, 218,962.80 and 52,490.40 is: 78,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,975.20 : 218,962.80 = 52,490.40 : x
  2. Step 2: Convert to fraction form
    145,975.20/218,962.80 = 52,490.40/x
  3. Step 3: Cross multiply
    145,975.20x = 218,962.80 × 52,490.40
  4. Step 4: Simplify right side
    145,975.20x = 11,493,444,957.12
  5. Step 5: Solve for x
    x = 11,493,444,957.12/145,975.20
  6. Step 6: Final answer
    x = 78,735.60

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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.