Home / 103,023.36-142,122.06-64,830.24

Finding the Fourth Proportional to 103,023.36, 142,122.06 and 64,830.24

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Solution

The fourth proportional to 103,023.36, 142,122.06 and 64,830.24 is: 89,434.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,023.36 : 142,122.06 = 64,830.24 : x
  2. Step 2: Convert to fraction form
    103,023.36/142,122.06 = 64,830.24/x
  3. Step 3: Cross multiply
    103,023.36x = 142,122.06 × 64,830.24
  4. Step 4: Simplify right side
    103,023.36x = 9,213,807,259.09
  5. Step 5: Solve for x
    x = 9,213,807,259.09/103,023.36
  6. Step 6: Final answer
    x = 89,434.16

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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.