Home / 109,440.51-151,037.80-66,430.95

Finding the Fourth Proportional to 109,440.51, 151,037.80 and 66,430.95

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Solution

The fourth proportional to 109,440.51, 151,037.80 and 66,430.95 is: 91,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,440.51 : 151,037.80 = 66,430.95 : x
  2. Step 2: Convert to fraction form
    109,440.51/151,037.80 = 66,430.95/x
  3. Step 3: Cross multiply
    109,440.51x = 151,037.80 × 66,430.95
  4. Step 4: Simplify right side
    109,440.51x = 10,033,584,373.83
  5. Step 5: Solve for x
    x = 10,033,584,373.83/109,440.51
  6. Step 6: Final answer
    x = 91,680.72

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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.