Home / 153,428.20-230,164.98-78,590.68

Finding the Fourth Proportional to 153,428.20, 230,164.98 and 78,590.68

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Solution

The fourth proportional to 153,428.20, 230,164.98 and 78,590.68 is: 117,897.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,428.20 : 230,164.98 = 78,590.68 : x
  2. Step 2: Convert to fraction form
    153,428.20/230,164.98 = 78,590.68/x
  3. Step 3: Cross multiply
    153,428.20x = 230,164.98 × 78,590.68
  4. Step 4: Simplify right side
    153,428.20x = 18,088,822,290.39
  5. Step 5: Solve for x
    x = 18,088,822,290.39/153,428.20
  6. Step 6: Final answer
    x = 117,897.64

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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.