Home / 154,783.50-213,603.53-90,251.01

Finding the Fourth Proportional to 154,783.50, 213,603.53 and 90,251.01

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Solution

The fourth proportional to 154,783.50, 213,603.53 and 90,251.01 is: 124,547.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,783.50 : 213,603.53 = 90,251.01 : x
  2. Step 2: Convert to fraction form
    154,783.50/213,603.53 = 90,251.01/x
  3. Step 3: Cross multiply
    154,783.50x = 213,603.53 × 90,251.01
  4. Step 4: Simplify right side
    154,783.50x = 19,277,934,322.07
  5. Step 5: Solve for x
    x = 19,277,934,322.07/154,783.50
  6. Step 6: Final answer
    x = 124,547.73

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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.