Home / 98,964.75-136,580-54,261.39

Finding the Fourth Proportional to 98,964.75, 136,580 and 54,261.39

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Solution

The fourth proportional to 98,964.75, 136,580 and 54,261.39 is: 74,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,964.75 : 136,580 = 54,261.39 : x
  2. Step 2: Convert to fraction form
    98,964.75/136,580 = 54,261.39/x
  3. Step 3: Cross multiply
    98,964.75x = 136,580 × 54,261.39
  4. Step 4: Simplify right side
    98,964.75x = 7,411,020,646.20
  5. Step 5: Solve for x
    x = 7,411,020,646.20/98,964.75
  6. Step 6: Final answer
    x = 74,885.46

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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.