Home / 114,821.12-158,479.80-72,437.60

Finding the Fourth Proportional to 114,821.12, 158,479.80 and 72,437.60

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Solution

The fourth proportional to 114,821.12, 158,479.80 and 72,437.60 is: 99,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,821.12 : 158,479.80 = 72,437.60 : x
  2. Step 2: Convert to fraction form
    114,821.12/158,479.80 = 72,437.60/x
  3. Step 3: Cross multiply
    114,821.12x = 158,479.80 × 72,437.60
  4. Step 4: Simplify right side
    114,821.12x = 11,479,896,360.48
  5. Step 5: Solve for x
    x = 11,479,896,360.48/114,821.12
  6. Step 6: Final answer
    x = 99,980.70

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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.