Home / 105,124.36-145,070.56-57,377.28

Finding the Fourth Proportional to 105,124.36, 145,070.56 and 57,377.28

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Solution

The fourth proportional to 105,124.36, 145,070.56 and 57,377.28 is: 79,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,124.36 : 145,070.56 = 57,377.28 : x
  2. Step 2: Convert to fraction form
    105,124.36/145,070.56 = 57,377.28/x
  3. Step 3: Cross multiply
    105,124.36x = 145,070.56 × 57,377.28
  4. Step 4: Simplify right side
    105,124.36x = 8,323,754,140.88
  5. Step 5: Solve for x
    x = 8,323,754,140.88/105,124.36
  6. Step 6: Final answer
    x = 79,180.07

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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.