Home / 100,953,007.80-151,429,511.70-72,287,561.40

Finding the Fourth Proportional to 100,953,007.80, 151,429,511.70 and 72,287,561.40

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Solution

The fourth proportional to 100,953,007.80, 151,429,511.70 and 72,287,561.40 is: 108,431,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953,007.80 : 151,429,511.70 = 72,287,561.40 : x
  2. Step 2: Convert to fraction form
    100,953,007.80/151,429,511.70 = 72,287,561.40/x
  3. Step 3: Cross multiply
    100,953,007.80x = 151,429,511.70 × 72,287,561.40
  4. Step 4: Simplify right side
    100,953,007.80x = 10,946,470,124,785,768
  5. Step 5: Solve for x
    x = 10,946,470,124,785,768/100,953,007.80
  6. Step 6: Final answer
    x = 108,431,342.10

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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.