Home / 153,153.41-211,320.74-89,478.91

Finding the Fourth Proportional to 153,153.41, 211,320.74 and 89,478.91

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Solution

The fourth proportional to 153,153.41, 211,320.74 and 89,478.91 is: 123,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,153.41 : 211,320.74 = 89,478.91 : x
  2. Step 2: Convert to fraction form
    153,153.41/211,320.74 = 89,478.91/x
  3. Step 3: Cross multiply
    153,153.41x = 211,320.74 × 89,478.91
  4. Step 4: Simplify right side
    153,153.41x = 18,908,747,971.60
  5. Step 5: Solve for x
    x = 18,908,747,971.60/153,153.41
  6. Step 6: Final answer
    x = 123,462.79

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1.5x scale

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.