Home / 99,064.16-136,889.28-72,159.68

Finding the Fourth Proportional to 99,064.16, 136,889.28 and 72,159.68

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Solution

The fourth proportional to 99,064.16, 136,889.28 and 72,159.68 is: 99,712.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,064.16 : 136,889.28 = 72,159.68 : x
  2. Step 2: Convert to fraction form
    99,064.16/136,889.28 = 72,159.68/x
  3. Step 3: Cross multiply
    99,064.16x = 136,889.28 × 72,159.68
  4. Step 4: Simplify right side
    99,064.16x = 9,877,886,640.23
  5. Step 5: Solve for x
    x = 9,877,886,640.23/99,064.16
  6. Step 6: Final answer
    x = 99,712.01

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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.