Home / 123,783.04-170,794.31-72,777.16

Finding the Fourth Proportional to 123,783.04, 170,794.31 and 72,777.16

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Solution

The fourth proportional to 123,783.04, 170,794.31 and 72,777.16 is: 100,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,783.04 : 170,794.31 = 72,777.16 : x
  2. Step 2: Convert to fraction form
    123,783.04/170,794.31 = 72,777.16/x
  3. Step 3: Cross multiply
    123,783.04x = 170,794.31 × 72,777.16
  4. Step 4: Simplify right side
    123,783.04x = 12,429,924,825.96
  5. Step 5: Solve for x
    x = 12,429,924,825.96/123,783.04
  6. Step 6: Final answer
    x = 100,417.03

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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.