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Finding the Fourth Proportional to 188,555.60, 260,206.68 and 103,678.16

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Solution

The fourth proportional to 188,555.60, 260,206.68 and 103,678.16 is: 143,075.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,555.60 : 260,206.68 = 103,678.16 : x
  2. Step 2: Convert to fraction form
    188,555.60/260,206.68 = 103,678.16/x
  3. Step 3: Cross multiply
    188,555.60x = 260,206.68 × 103,678.16
  4. Step 4: Simplify right side
    188,555.60x = 26,977,749,802.11
  5. Step 5: Solve for x
    x = 26,977,749,802.11/188,555.60
  6. Step 6: Final answer
    x = 143,075.83

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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.