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Finding the Fourth Proportional to 169,987.55, 255,044.10 and 70,156.40

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Solution

The fourth proportional to 169,987.55, 255,044.10 and 70,156.40 is: 105,260.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,987.55 : 255,044.10 = 70,156.40 : x
  2. Step 2: Convert to fraction form
    169,987.55/255,044.10 = 70,156.40/x
  3. Step 3: Cross multiply
    169,987.55x = 255,044.10 × 70,156.40
  4. Step 4: Simplify right side
    169,987.55x = 17,892,975,897.24
  5. Step 5: Solve for x
    x = 17,892,975,897.24/169,987.55
  6. Step 6: Final answer
    x = 105,260.51

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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.