Home / 153,153.16-211,320.39-89,478.66

Finding the Fourth Proportional to 153,153.16, 211,320.39 and 89,478.66

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Solution

The fourth proportional to 153,153.16, 211,320.39 and 89,478.66 is: 123,462.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,153.16 : 211,320.39 = 89,478.66 : x
  2. Step 2: Convert to fraction form
    153,153.16/211,320.39 = 89,478.66/x
  3. Step 3: Cross multiply
    153,153.16x = 211,320.39 × 89,478.66
  4. Step 4: Simplify right side
    153,153.16x = 18,908,664,271.28
  5. Step 5: Solve for x
    x = 18,908,664,271.28/153,153.16
  6. Step 6: Final answer
    x = 123,462.45

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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.