Home / 105,557.16-145,669.14-57,813.60

Finding the Fourth Proportional to 105,557.16, 145,669.14 and 57,813.60

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Solution

The fourth proportional to 105,557.16, 145,669.14 and 57,813.60 is: 79,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,557.16 : 145,669.14 = 57,813.60 : x
  2. Step 2: Convert to fraction form
    105,557.16/145,669.14 = 57,813.60/x
  3. Step 3: Cross multiply
    105,557.16x = 145,669.14 × 57,813.60
  4. Step 4: Simplify right side
    105,557.16x = 8,421,657,392.30
  5. Step 5: Solve for x
    x = 8,421,657,392.30/105,557.16
  6. Step 6: Final answer
    x = 79,782.91

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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.