Home / 189,870.06-284,746.76-90,000.70

Finding the Fourth Proportional to 189,870.06, 284,746.76 and 90,000.70

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Solution

The fourth proportional to 189,870.06, 284,746.76 and 90,000.70 is: 134,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,870.06 : 284,746.76 = 90,000.70 : x
  2. Step 2: Convert to fraction form
    189,870.06/284,746.76 = 90,000.70/x
  3. Step 3: Cross multiply
    189,870.06x = 284,746.76 × 90,000.70
  4. Step 4: Simplify right side
    189,870.06x = 25,627,407,722.73
  5. Step 5: Solve for x
    x = 25,627,407,722.73/189,870.06
  6. Step 6: Final answer
    x = 134,973.40

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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.