Home / 101,036.08-139,430.75-55,715.66

Finding the Fourth Proportional to 101,036.08, 139,430.75 and 55,715.66

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Solution

The fourth proportional to 101,036.08, 139,430.75 and 55,715.66 is: 76,888.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,036.08 : 139,430.75 = 55,715.66 : x
  2. Step 2: Convert to fraction form
    101,036.08/139,430.75 = 55,715.66/x
  3. Step 3: Cross multiply
    101,036.08x = 139,430.75 × 55,715.66
  4. Step 4: Simplify right side
    101,036.08x = 7,768,476,260.55
  5. Step 5: Solve for x
    x = 7,768,476,260.55/101,036.08
  6. Step 6: Final answer
    x = 76,888.14

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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.