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Finding the Fourth Proportional to 119,555.79, 164,980.38 and 65,830.32

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Solution

The fourth proportional to 119,555.79, 164,980.38 and 65,830.32 is: 90,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,555.79 : 164,980.38 = 65,830.32 : x
  2. Step 2: Convert to fraction form
    119,555.79/164,980.38 = 65,830.32/x
  3. Step 3: Cross multiply
    119,555.79x = 164,980.38 × 65,830.32
  4. Step 4: Simplify right side
    119,555.79x = 10,860,711,209.12
  5. Step 5: Solve for x
    x = 10,860,711,209.12/119,555.79
  6. Step 6: Final answer
    x = 90,842.20

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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.