Home / 155,826,899.10-215,022,217.59-89,768,782.80

Finding the Fourth Proportional to 155,826,899.10, 215,022,217.59 and 89,768,782.80

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Solution

The fourth proportional to 155,826,899.10, 215,022,217.59 and 89,768,782.80 is: 123,870,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,826,899.10 : 215,022,217.59 = 89,768,782.80 : x
  2. Step 2: Convert to fraction form
    155,826,899.10/215,022,217.59 = 89,768,782.80/x
  3. Step 3: Cross multiply
    155,826,899.10x = 215,022,217.59 × 89,768,782.80
  4. Step 4: Simplify right side
    155,826,899.10x = 19,302,282,748,011,048
  5. Step 5: Solve for x
    x = 19,302,282,748,011,048/155,826,899.10
  6. Step 6: Final answer
    x = 123,870,030.52

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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.