Home / 154,307.81-212,987.57-89,789.48

Finding the Fourth Proportional to 154,307.81, 212,987.57 and 89,789.48

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Solution

The fourth proportional to 154,307.81, 212,987.57 and 89,789.48 is: 123,934.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,307.81 : 212,987.57 = 89,789.48 : x
  2. Step 2: Convert to fraction form
    154,307.81/212,987.57 = 89,789.48/x
  3. Step 3: Cross multiply
    154,307.81x = 212,987.57 × 89,789.48
  4. Step 4: Simplify right side
    154,307.81x = 19,124,041,642.88
  5. Step 5: Solve for x
    x = 19,124,041,642.88/154,307.81
  6. Step 6: Final answer
    x = 123,934.38

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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.