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Finding the Fourth Proportional to 155,547.60, 233,148.60 and 85,477.20

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Solution

The fourth proportional to 155,547.60, 233,148.60 and 85,477.20 is: 128,120.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,547.60 : 233,148.60 = 85,477.20 : x
  2. Step 2: Convert to fraction form
    155,547.60/233,148.60 = 85,477.20/x
  3. Step 3: Cross multiply
    155,547.60x = 233,148.60 × 85,477.20
  4. Step 4: Simplify right side
    155,547.60x = 19,928,889,511.92
  5. Step 5: Solve for x
    x = 19,928,889,511.92/155,547.60
  6. Step 6: Final answer
    x = 128,120.84

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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.