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Finding the Fourth Proportional to 136,710.60, 205,065.90 and 57,798.60

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Solution

The fourth proportional to 136,710.60, 205,065.90 and 57,798.60 is: 86,697.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,710.60 : 205,065.90 = 57,798.60 : x
  2. Step 2: Convert to fraction form
    136,710.60/205,065.90 = 57,798.60/x
  3. Step 3: Cross multiply
    136,710.60x = 205,065.90 × 57,798.60
  4. Step 4: Simplify right side
    136,710.60x = 11,852,521,927.74
  5. Step 5: Solve for x
    x = 11,852,521,927.74/136,710.60
  6. Step 6: Final answer
    x = 86,697.90

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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.