Home / 98,743.16-136,264.98-53,421

Finding the Fourth Proportional to 98,743.16, 136,264.98 and 53,421

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Solution

The fourth proportional to 98,743.16, 136,264.98 and 53,421 is: 73,720.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,743.16 : 136,264.98 = 53,421 : x
  2. Step 2: Convert to fraction form
    98,743.16/136,264.98 = 53,421/x
  3. Step 3: Cross multiply
    98,743.16x = 136,264.98 × 53,421
  4. Step 4: Simplify right side
    98,743.16x = 7,279,411,496.58
  5. Step 5: Solve for x
    x = 7,279,411,496.58/98,743.16
  6. Step 6: Final answer
    x = 73,720.67

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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.