Home / 153,065,475.87-211,221,254.37-86,976,801.72

Finding the Fourth Proportional to 153,065,475.87, 211,221,254.37 and 86,976,801.72

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Solution

The fourth proportional to 153,065,475.87, 211,221,254.37 and 86,976,801.72 is: 120,022,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,065,475.87 : 211,221,254.37 = 86,976,801.72 : x
  2. Step 2: Convert to fraction form
    153,065,475.87/211,221,254.37 = 86,976,801.72/x
  3. Step 3: Cross multiply
    153,065,475.87x = 211,221,254.37 × 86,976,801.72
  4. Step 4: Simplify right side
    153,065,475.87x = 18,371,349,160,389,172
  5. Step 5: Solve for x
    x = 18,371,349,160,389,172/153,065,475.87
  6. Step 6: Final answer
    x = 120,022,814.13

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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.