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Finding the Fourth Proportional to 112,878.59, 155,775.42 and 63,816.30

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Solution

The fourth proportional to 112,878.59, 155,775.42 and 63,816.30 is: 88,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,878.59 : 155,775.42 = 63,816.30 : x
  2. Step 2: Convert to fraction form
    112,878.59/155,775.42 = 63,816.30/x
  3. Step 3: Cross multiply
    112,878.59x = 155,775.42 × 63,816.30
  4. Step 4: Simplify right side
    112,878.59x = 9,941,010,935.35
  5. Step 5: Solve for x
    x = 9,941,010,935.35/112,878.59
  6. Step 6: Final answer
    x = 88,068.17

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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.