Home / 102,078.20-153,117.30-31,000.70

Finding the Fourth Proportional to 102,078.20, 153,117.30 and 31,000.70

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Solution

The fourth proportional to 102,078.20, 153,117.30 and 31,000.70 is: 46,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,078.20 : 153,117.30 = 31,000.70 : x
  2. Step 2: Convert to fraction form
    102,078.20/153,117.30 = 31,000.70/x
  3. Step 3: Cross multiply
    102,078.20x = 153,117.30 × 31,000.70
  4. Step 4: Simplify right side
    102,078.20x = 4,746,743,482.11
  5. Step 5: Solve for x
    x = 4,746,743,482.11/102,078.20
  6. Step 6: Final answer
    x = 46,501.05

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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.