Home / 154,031.50-212,561.12-86,049.45

Finding the Fourth Proportional to 154,031.50, 212,561.12 and 86,049.45

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Solution

The fourth proportional to 154,031.50, 212,561.12 and 86,049.45 is: 118,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,031.50 : 212,561.12 = 86,049.45 : x
  2. Step 2: Convert to fraction form
    154,031.50/212,561.12 = 86,049.45/x
  3. Step 3: Cross multiply
    154,031.50x = 212,561.12 × 86,049.45
  4. Step 4: Simplify right side
    154,031.50x = 18,290,767,682.51
  5. Step 5: Solve for x
    x = 18,290,767,682.51/154,031.50
  6. Step 6: Final answer
    x = 118,746.93

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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.