Home / 100,838,077.60-151,257,116.40-66,400,700.80

Finding the Fourth Proportional to 100,838,077.60, 151,257,116.40 and 66,400,700.80

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Solution

The fourth proportional to 100,838,077.60, 151,257,116.40 and 66,400,700.80 is: 99,601,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,838,077.60 : 151,257,116.40 = 66,400,700.80 : x
  2. Step 2: Convert to fraction form
    100,838,077.60/151,257,116.40 = 66,400,700.80/x
  3. Step 3: Cross multiply
    100,838,077.60x = 151,257,116.40 × 66,400,700.80
  4. Step 4: Simplify right side
    100,838,077.60x = 10,043,578,529,947,174
  5. Step 5: Solve for x
    x = 10,043,578,529,947,174/100,838,077.60
  6. Step 6: Final answer
    x = 99,601,051.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.