Home / 103,670.12-143,108.10-70,155.56

Finding the Fourth Proportional to 103,670.12, 143,108.10 and 70,155.56

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Solution

The fourth proportional to 103,670.12, 143,108.10 and 70,155.56 is: 96,844.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.12 : 143,108.10 = 70,155.56 : x
  2. Step 2: Convert to fraction form
    103,670.12/143,108.10 = 70,155.56/x
  3. Step 3: Cross multiply
    103,670.12x = 143,108.10 × 70,155.56
  4. Step 4: Simplify right side
    103,670.12x = 10,039,828,896.04
  5. Step 5: Solve for x
    x = 10,039,828,896.04/103,670.12
  6. Step 6: Final answer
    x = 96,844.00

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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.