Home / 155,973,218.12-215,249,765.28-86,358,598.48

Finding the Fourth Proportional to 155,973,218.12, 215,249,765.28 and 86,358,598.48

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Solution

The fourth proportional to 155,973,218.12, 215,249,765.28 and 86,358,598.48 is: 119,178,588.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,973,218.12 : 215,249,765.28 = 86,358,598.48 : x
  2. Step 2: Convert to fraction form
    155,973,218.12/215,249,765.28 = 86,358,598.48/x
  3. Step 3: Cross multiply
    155,973,218.12x = 215,249,765.28 × 86,358,598.48
  4. Step 4: Simplify right side
    155,973,218.12x = 18,588,668,052,729,764
  5. Step 5: Solve for x
    x = 18,588,668,052,729,764/155,973,218.12
  6. Step 6: Final answer
    x = 119,178,588.97

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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.