Home / 153,931.32-212,365.26-103,663.80

Finding the Fourth Proportional to 153,931.32, 212,365.26 and 103,663.80

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Solution

The fourth proportional to 153,931.32, 212,365.26 and 103,663.80 is: 143,015.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,931.32 : 212,365.26 = 103,663.80 : x
  2. Step 2: Convert to fraction form
    153,931.32/212,365.26 = 103,663.80/x
  3. Step 3: Cross multiply
    153,931.32x = 212,365.26 × 103,663.80
  4. Step 4: Simplify right side
    153,931.32x = 22,014,589,839.59
  5. Step 5: Solve for x
    x = 22,014,589,839.59/153,931.32
  6. Step 6: Final answer
    x = 143,015.66

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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.