Home / 105,317.40-145,340.80-62,900.40

Finding the Fourth Proportional to 105,317.40, 145,340.80 and 62,900.40

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Solution

The fourth proportional to 105,317.40, 145,340.80 and 62,900.40 is: 86,804.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,317.40 : 145,340.80 = 62,900.40 : x
  2. Step 2: Convert to fraction form
    105,317.40/145,340.80 = 62,900.40/x
  3. Step 3: Cross multiply
    105,317.40x = 145,340.80 × 62,900.40
  4. Step 4: Simplify right side
    105,317.40x = 9,141,994,456.32
  5. Step 5: Solve for x
    x = 9,141,994,456.32/105,317.40
  6. Step 6: Final answer
    x = 86,804.22

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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.