Home / 105,152.22-144,856.08-89,996.40

Finding the Fourth Proportional to 105,152.22, 144,856.08 and 89,996.40

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Solution

The fourth proportional to 105,152.22, 144,856.08 and 89,996.40 is: 123,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,152.22 : 144,856.08 = 89,996.40 : x
  2. Step 2: Convert to fraction form
    105,152.22/144,856.08 = 89,996.40/x
  3. Step 3: Cross multiply
    105,152.22x = 144,856.08 × 89,996.40
  4. Step 4: Simplify right side
    105,152.22x = 13,036,525,718.11
  5. Step 5: Solve for x
    x = 13,036,525,718.11/105,152.22
  6. Step 6: Final answer
    x = 123,977.66

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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.