Home / 153,649.08-212,030.28-89,985.60

Finding the Fourth Proportional to 153,649.08, 212,030.28 and 89,985.60

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Solution

The fourth proportional to 153,649.08, 212,030.28 and 89,985.60 is: 124,176.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,649.08 : 212,030.28 = 89,985.60 : x
  2. Step 2: Convert to fraction form
    153,649.08/212,030.28 = 89,985.60/x
  3. Step 3: Cross multiply
    153,649.08x = 212,030.28 × 89,985.60
  4. Step 4: Simplify right side
    153,649.08x = 19,079,671,963.97
  5. Step 5: Solve for x
    x = 19,079,671,963.97/153,649.08
  6. Step 6: Final answer
    x = 124,176.94

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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.