Home / 153,786.34-212,225.32-90,124.20

Finding the Fourth Proportional to 153,786.34, 212,225.32 and 90,124.20

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Solution

The fourth proportional to 153,786.34, 212,225.32 and 90,124.20 is: 124,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,786.34 : 212,225.32 = 90,124.20 : x
  2. Step 2: Convert to fraction form
    153,786.34/212,225.32 = 90,124.20/x
  3. Step 3: Cross multiply
    153,786.34x = 212,225.32 × 90,124.20
  4. Step 4: Simplify right side
    153,786.34x = 19,126,637,184.74
  5. Step 5: Solve for x
    x = 19,126,637,184.74/153,786.34
  6. Step 6: Final answer
    x = 124,371.50

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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.