Home / 154,319-212,966.26-90,656.24

Finding the Fourth Proportional to 154,319, 212,966.26 and 90,656.24

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Solution

The fourth proportional to 154,319, 212,966.26 and 90,656.24 is: 125,109.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,319 : 212,966.26 = 90,656.24 : x
  2. Step 2: Convert to fraction form
    154,319/212,966.26 = 90,656.24/x
  3. Step 3: Cross multiply
    154,319x = 212,966.26 × 90,656.24
  4. Step 4: Simplify right side
    154,319x = 19,306,720,378.46
  5. Step 5: Solve for x
    x = 19,306,720,378.46/154,319
  6. Step 6: Final answer
    x = 125,109.16

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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.