Home / 123,678.12-170,627.10-75,848.40

Finding the Fourth Proportional to 123,678.12, 170,627.10 and 75,848.40

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Solution

The fourth proportional to 123,678.12, 170,627.10 and 75,848.40 is: 104,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,678.12 : 170,627.10 = 75,848.40 : x
  2. Step 2: Convert to fraction form
    123,678.12/170,627.10 = 75,848.40/x
  3. Step 3: Cross multiply
    123,678.12x = 170,627.10 × 75,848.40
  4. Step 4: Simplify right side
    123,678.12x = 12,941,792,531.64
  5. Step 5: Solve for x
    x = 12,941,792,531.64/123,678.12
  6. Step 6: Final answer
    x = 104,640.92

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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.